Ornithological Applications最新文献

{"title":"Drastic reduction of the population distribution of White Storks predicted in absence of landfills","authors":"Alejandro López-García, D. Gil‐Tapetado, J. I. Aguirre","doi":"10.1093/ornithapp/duad021","DOIUrl":"https://doi.org/10.1093/ornithapp/duad021","url":null,"abstract":"ABSTRACT Organic waste production has greatly increased following human sprawl and led to the development of landfills in recent decades. This abundant and reliable anthropogenic food source has favored several species, some of which consequently became overabundant. Landfills present hazards to wildlife, which may suffocate on plastic materials, tangle on cords, and get exposed to pollutants and pathogens. In response to environmental and public health concerns over the maintenance of landfills, the European Commission proposed to close the landfills. Our objective was to determine the impact of Landfill European Directive on the White Stork (Ciconia ciconia) whose population recovery and growth was linked to landfill exploitation. We implemented species distribution models to project future distribution in the absence of landfills in the Community of Madrid (Spain). Habitat suitability was estimated based on nest occurrence and we included data from land cover types, human population density, and two different climate change scenarios (i.e. emissions in low and high shared socioeconomic pathways). Given that protection measures, particularly implemented in protected areas, were associated with population recovery, we also evaluated the overlapping degree between protected areas and projected distribution. Our models predicted a sharp decline in breeding population distribution with landfill closure, reaching values similar to the 1984 breeding census when the species was categorized as threatened. Our results also suggest a decrease in maximum habitat suitability. Climate change also contributed to a reduction in breeding population distribution given model predictions for the extreme emission pathway (ssp5). Measures such as gradual change in landfill management, continuous monitoring of breeding populations, and evaluation of the White Stork use of natural feeding areas before and after landfill closure, should be considered. How to Cite López-García, A., D. Gil-Tapetado, and J. I. Aguirre (2023). Drastic reduction of the population distribution of White Storks predicted in absence of landfills. Ornithological Applications 125:duad021. LAY SUMMARY Several animal species have thrived around landfills, which was particularly important for threatened species. However, the Landfill European Directive (1999/31/CE) promote the landfill closure in the next decade. Knowing the impact of this Directive prior to its implementation should be a priority for the responsible authorities. We projected habitat suitability and the future White Stork breeding population distribution in absence of landfill in the Community of Madrid (Spain) in two scenarios of climate change and growing urbanization. Our models signaled landfill closure, climate change and urbanization growing, as the main threats to the White Stork breeding population. We proposed gradual change in landfill management, continuous monitoring of breeding populations, and evaluation of the White ","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125770148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More than mortality: Consequences of human activity on migrating birds extend beyond direct mortality","authors":"C. Nemes, Sergio A. Cabrera‐Cruz, M. Anderson, Lucas W. DeGroote, Joely G. DeSimone, Megan Massa, E. Cohen","doi":"10.1093/ornithapp/duad020","DOIUrl":"https://doi.org/10.1093/ornithapp/duad020","url":null,"abstract":"ABSTRACT Birds must contend with an array of anthropogenic threats during their migratory journeys. Many migrants are killed due to encounters with artificial light, introduced species, pollutants, and other anthropogenic hazards, while survivors of these encounters can suffer longer-lasting negative effects. The nonlethal effects of anthropogenic threats on migrating birds are less well understood than direct mortality, yet both potentially contribute to population declines. For example, building collisions frequently kill migrating birds, but the numbers of migrants that survive with an impaired ability to fly, refuel, or navigate to their destination on time is not well understood. Though not immediately fatal, such injuries can lead to delayed mortality and, ultimately, reduced lifetime reproductive success. Furthermore, migrants are likely to encounter multiple threats on their journeys, which can interact synergistically to further reduce fitness. For instance, light pollution attracts and disorients migrants, increasing the likelihood of window strikes, and surviving birds may be more vulnerable to predation from introduced predators. While considerable attention has focused on the lethal effects of anthropogenic threats, here, we review nonlethal effects of eight types of threats during migration, their interactions, and the pathways through which they can exert fitness costs. In doing so, we identify knowledge gaps and suggest areas for future research. In the absence of more information, we propose that the greatest reduction in the cumulative lethal and nonlethal impacts of anthropogenic hazards will be achieved by addressing threat types, like artificial light at night, that interact with and compound the impact of additional threats. Direct mortality from anthropogenic sources is recognized as a key driver of population declines, but a full understanding of the impacts of human activity on migrating birds must include the cumulative and interacting effects that extend beyond immediate mortality en route to influence overall migration success and lifetime fitness. How to Cite Nemes, C. E., S. A. Cabrera-Cruz, M. J. Anderson, L. W. DeGroote, J. G. DeSimone, M. L. Massa, and E. B. Cohen (2023). More than mortality: Consequences of human activity on migrating birds extend beyond direct mortality. Ornithological Applications 125:duad020. LAY SUMMARY Migrating birds around the world face a wide variety of threats from human activity and many species are declining significantly. Many migrants are killed by these threats, while those exposed but not immediately killed may experience changes in their condition, migration timing, orientation, or route. Nonlethal effects of threats during migration, such as sensory pollutants and introduced species, have not been well-studied but are likely contributing to population declines by lowering future survival or reproduction. We review support for the nonlethal impacts of eight anthropogenic threats,","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130350661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing bird diversity in Neotropical rainforests: A comparative study of camera traps and mist nets reveals complementary sampling approaches","authors":"Angela M. Vargas‐Daza, Juan F. Betancurt‐Grisales, Leydy J. Cardona-Salazar, Yenny A Benavides-Ossa, F. Fontúrbel, Gabriel J. Castaño‐Villa","doi":"10.1093/ornithapp/duad019","DOIUrl":"https://doi.org/10.1093/ornithapp/duad019","url":null,"abstract":"ABSTRACT Different sampling methods are used to study bird diversity in the tropics, mist nets being one of the most common approaches. However, camera traps have been used for this purpose in the last 20 years. We compared the performance of mist nets and camera traps in sampling the diversity of understory and sub-canopy birds in a Neotropical rainforest. Given its high biodiversity, obtaining accurate bird diversity estimates in these forests is a challenging task. We sampled secondary forest patches in the Colombian central Andes between 2019 and 2021. We compared the effectiveness of both methods based on six comparison criteria (body size, foraging stratum, detection difficulty, habitat specialization, population trend, and migratory status). We recorded a total of 99 bird species: 92 species were captured using mist nets and 37 species using camera traps; 30 species were detected using both methods (mainly generalist and abundant birds). Mist net's effectiveness was 83%, while camera trap effectiveness was 68%. Differences in sampling effectiveness were mainly determined by body size, as small birds were captured using mist nets, while camera traps often recorded large birds. However, detection difficulty and habitat specialization were also relevant. Camera traps effectively recorded ground-dwelling species that were not captured in mist nets. In contrast, those birds that forage in the sub-canopy stratum were mainly captured in the mist nets but not detected in camera traps. Although both methods detected different species, we found similar patterns regarding estimated species richness among different categories of body size, detection difficulty, population trend, and behavior, but not for habitat specialization. As both methods have advantages and limitations, using mist nets and camera traps together would improve bird diversity estimations. We urge investigators to explore canopy ecology with camera traps, as they provide long-term information that cannot be obtained with other methods. How to Cite Vargas-Daza, A. M., J. F. Betancurt-Grisales, L. J. Cardona-Salazar, Y. A. Benavides-Ossa, F. E. Fontúrbel, and G. J. Castaño-Villa (2023). Assessing bird diversity in Neotropical rainforests: A comparative study of camera traps and mist nets reveals complementary sampling approaches. Ornithological Applications 125:duad019. LAY SUMMARY Camera traps are often used for biodiversity inventories and population monitoring of terrestrial and understory birds in tropical forests. Their use has considerably increased in the last couple of decades. Assessing camera trap performance for bird sampling is key to improve bird monitoring in the tropics. Mist nets recorded more bird species than camera traps, as small birds that fly in the sub-canopy were captured by those nets but not detected by cameras. Conversely, camera traps recorded large ground-dwelling birds not captured in the mist nests, providing complementary information for bird surveys. M","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114878864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Passive acoustic monitoring indicates Barred Owls are established in northern coastal California and management intervention is warranted","authors":"Whitney A Watson, Connor M. Wood, Kevin G. Kelly, Dan Hofstadter, Nick Kryshak, Ceeanna J. Zulla, S. Whitmore, Virginia O’Rourke, J. Keane, M. Z. Peery","doi":"10.1093/ornithapp/duad017","DOIUrl":"https://doi.org/10.1093/ornithapp/duad017","url":null,"abstract":"ABSTRACT Barred Owls (Strix varia) have recently expanded westward from eastern North America, contributing to substantial declines in Northern Spotted Owls (Strix occidentalis caurina). Passive acoustic monitoring (PAM) represents a potentially powerful approach for tracking range expansions like the Barred Owl's, but further methods development is needed to ensure that PAM-informed occupancy models meaningfully reflect population processes. Focusing on the leading edge of the Barred Owl range expansion in coastal California, we used a combination of PAM data, GPS-tagging, and active surveys to (1) estimate breeding home range size, (2) identify patterns of vocal activity that reflect resident occupancy, and (3) estimate resident occupancy rates. Mean breeding season home range size (452 ha) was reasonably consistent with the size of cells (400 ha) sampled with autonomous recording units (ARUs). Nevertheless, false-positive acoustic detections of Barred Owls frequently occurred within cells not containing an activity center such that site occupancy estimates derived using all detected vocalizations (0.61) were unlikely to be representative of resident occupancy. However, the proportion of survey nights with confirmed vocalizations (VN) and the number of ARUs within a sampling cell with confirmed vocalizations (VU) were indicative of Barred Owl residency. Moreover, the false positive error rate could be reduced for occupancy analyses by establishing thresholds of VN and VU to define detections, although doing so increased false negative error rates in some cases. Using different thresholds of VN and VU, we estimated resident occupancy to be 0.29–0.44, which indicates that Barred Owls have become established in the region but also that timely lethal removals could still help prevent the extirpation of Northern Spotted Owls. Our findings provide a scalable framework for monitoring Barred Owl populations throughout their expanded range and, more broadly, a basis for converting site occupancy to resident occupancy in PAM programs. How to Cite Watson, W. A., C. M. Wood, K. G. Kelly, D. F. Hofstadter, N. F. Kryshak, C. J. Zulla, S. A. Whitmore, V. O'Rourke, J. J. Keane, and M. Z. Peery (2023). Passive acoustic monitoring indicates Barred Owls are established in northern coastal California and management intervention is warranted. Ornithological Applications 125:duad017. LAY SUMMARY The range of the Barred Owl has expanded to overlap that of the Northern Spotted Owl, and Barred Owls have contributed to the Northern Spotted Owl population declines. Monitoring Barred Owl populations is critical for Northern Spotted Owl and western forest ecosystem conservation. Passive acoustic monitoring is increasingly being used to estimate occupancy rates of Barred Owls, but how well these estimates reflect actual population status has not been well studied. We compared passive acoustic survey results to active, in-person survey results in Coastal California to identi","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115279794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Henslow's Sparrow shows positive response to prescribed fire rotation","authors":"Meghan P Keating, P. J. Williams, J. Robb, F. Buderman, J. P. Lewis, Teresa Vanosdol, Ryan Harer","doi":"10.1093/ornithapp/duad018","DOIUrl":"https://doi.org/10.1093/ornithapp/duad018","url":null,"abstract":"ABSTRACT We examined Henslow's Sparrow (Centronyx henslowii) response to prescribed fire at 32 grasslands at Big Oaks National Wildlife Refuge in southeastern Indiana from 1999 to 2009. We burned grasslands in the spring between 1999 and 2007 and monitored Henslow's Sparrows for up to 4 yr after treatment. We used linear mixed models to analyze our data. Henslow's Sparrow counts were correlated with time since prescribed fire and grassland size. The estimated changes in mean Henslow's Sparrow density relative to pre-burn densities were –0.19, 1.15, 0.74, and –0.68 birds ha–1 for 1–4 breeding seasons after a spring burn, respectively. We found that Henslow's Sparrows preferred larger grasslands both during the first breeding season after prescribed fire, when vegetation was presumed to possess less litter and structural density, and during the fourth breeding season after fire, when vegetation was presumed to be a more ideal composition, but preferred smaller grasslands in the interim. Thus, grassland size shapes the magnitude of Henslow's Sparrow population response to fire, with populations in smaller grasslands experiencing greater amplitude changes. Larger grasslands might provide more habitat diversity following prescribed fire, attenuating population change. On average, Henslow's Sparrows responded positively to prescribed fire in a network of grasslands and cumulative net change in densities were highest three breeding seasons after a burn suggesting that maintaining this burn frequency would be beneficial to Henslow's Sparrow abundance. How to Cite Keating, M. P., P. J. Williams, J. R. Robb, F. E. Buderman, J. P. Lewis, T. Vanosdol, and R. Harer (2023). Henslow's Sparrow shows positive response to prescribed fire rotation. Ornithological Applications 125:duad018. LAY SUMMARY Henslow's Sparrow (Centronyx henslowii) abundance has declined across much of its range, leading to its designation as one of the highest priorities for grassland bird conservation according to the U.S. Fish and Wildlife Service. Research has shown that habitat loss and alteration, such as woody vegetation encroachment, is strongly associated with these population declines. Prescribed fire is often used to prevent woody encroachment into grasslands. In southeastern Indiana, grasslands are organized as a network of patches distributed within forested habitat. These heterogeneous patches, which vary in size and degree of isolation, make it difficult to predict the response of sparrows to prescribed fire and therefore to develop an optimal burn schedule. We studied Henslow's Sparrow response to a prescribed-fire regime by systematically burning grassland patches and performing Henslow's Sparrow counts for up to four breeding seasons post-burn. Our results suggest that a 3-yr burn cycle (i.e., burning in years 1 and 4) is an optimal strategy for promoting sparrow density. RESUMEN Examinamos la respuesta de Centronyx henslowii al fuego prescrito en 32 pastizales en el Refug","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122302250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Slow Birding: The Art and Science of Enjoying the Birds in Your Own Backyard","authors":"Sara R. Padula, Nikki Addison, Ajay M Patel, Abigail Buell, Haley L Kenyon, Scott A. Taylor","doi":"10.1093/ornithapp/duad012","DOIUrl":"https://doi.org/10.1093/ornithapp/duad012","url":null,"abstract":"","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116802351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Juvenile Northern Spotted Owls with higher mass and intermediate levels of corticosterone have greater long-term survival","authors":"Ashlee J. Mikkelsen, D. B. Lesmeister, Kathleen M O’Reilly, Katie M. Dugger","doi":"10.1093/ornithapp/duad015","DOIUrl":"https://doi.org/10.1093/ornithapp/duad015","url":null,"abstract":"ABSTRACT Early life experiences have carry-over effects that manifest in later life stages. Challenging rearing environments result in more energy invested in immediate survival and less energy on growth and maturation, which can decrease survival in both the short- and long-term. One way to measure differences in energy allocation to growth between individuals is through physiological indices, such as concentrations of the metabolic hormone corticosterone, and body condition. Corticosterone increases in response to challenges to homeostasis and mobilizes stored fat and muscle to meet energetic demands. Maintaining elevated corticosterone can result in poor body condition and decreased survival. Juvenile or pre-breeding age classes are typically a substantial portion of the total population and serve key functions in population dynamics in many long-lived species. Thus, understanding how the rearing environment may influence demographics across life-history stages is crucial to understanding larger population dynamics. Yet, demographic models and conservation planning often lack vital rate estimates for early life stages because, prior to breeding, animals cannot be effectively sampled (i.e., they are unobservable). We used corticosterone concentrations in feathers and body mass of fledged juvenile Northern Spotted Owls (Strix occidentalis caurina) as indicators of potential energetic limitations early in life and used a multi-state modeling framework to quantify the effect of these indicators on apparent annual survival prior to claiming a territory (pre-territorial birds) and the probability of recruiting into the territorial population. Apparent annual survival for pre-territorial birds was higher for birds with greater mass, earlier banding dates, and intermediate levels of corticosterone. Birds with greater mass at banding were also more likely to recruit into the territorial population. Our results demonstrate the importance of early development and traditionally excluded life-history stages on long-term demographics. Although early life stages are difficult to observe, monitoring and conservation efforts may be improved by increasing studies on pre-territorial animals, control of Barred Owls, and conservation of forest structures important for Spotted Owls. This may contribute to increased juvenile survival and recruitment. How to Cite Mikkelsen, A. J., D. B. Lesmeister, K. M. O'Reilly, and K. M. Dugger (2023). Juvenile Northern Spotted Owls with higher mass and intermediate levels of corticosterone have greater long-term survival. Ornithological Applications 125:duad015. LAY SUMMARY Animals have many mechanisms for responding to physical challenges and maintaining homeostasis. For instance, certain hormones make fat and protein available for immediate use to meet these challenges. However, this uses energy that could be otherwise spent on growth and maturation, resulting in smaller animals with lower probability of survival and finding te","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124688255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Woodpeckers in the city: Abundances are highest in large green spaces with complex understories","authors":"A. Baz, M. T. Murphy","doi":"10.1093/ornithapp/duad013","DOIUrl":"https://doi.org/10.1093/ornithapp/duad013","url":null,"abstract":"ABSTRACT We documented occurrence and relative abundance (henceforth abundance) of five woodpecker species in 36 forested green spaces in Portland, Oregon (USA), to estimate minimum area requirements (MAR; 0.5 probability of occurrence) and to test for potential influences of green space area and type (heavily treed manicured green spaces vs. undeveloped natural forests), habitat features, and landscape composition on the abundance of woodpeckers. Abundances of all species increased with green space area. Manicured and natural green spaces did not differ in canopy cover or total basal area, but woodpecker abundances were greater in natural than manicured green spaces for all species except Northern Flickers (Colaptes auratus). Flickers and Downy Woodpeckers (Picoides pubescens) were most abundant, MAR of both were under 1.5 ha, and both were found in essentially all green spaces. Hairy (P. villosus) and Pileated (Dryocopus pileatus) woodpeckers were least abundant, and with MAR of 34 and 51 ha, respectively, exhibited pronounced area sensitivity. Red-breasted Sapsuckers (Sphyrapicus ruber) were intermediate in abundance and MAR to the 2 former and 2 latter species. The most important habitat variables associated with variation in abundance among green spaces were the contribution of deciduous trees to the canopy (Downy Woodpecker [+], Pileated Woodpecker [+], and Northern Flicker [–]), canopy cover (Hairy Woodpecker [+] and Northern Flicker [+]), and log density (Hairy Woodpecker [+], Red-breasted Sapsucker [–]). At the landscape level, lower woodpecker abundance was associated with increased urbanization (Red-breasted Sapsucker and Northern Flicker), while increasing forest cover influenced abundance of Northern Flicker (–) and Pileated Woodpecker (+). Highest woodpecker abundances were thus found in large green spaces with complex understories that were embedded in relatively undeveloped treed landscapes. Management of forested urban green spaces should prioritize needs of the area-sensitive species because ensuring their continued presence benefits the entire avian community. How to Cite Baz, A., and M. T. Murphy (2023). Woodpeckers in the city: Abundances are highest in large green spaces with complex understories. Ornithological Applications 125:duad013. LAY SUMMARY Woodpeckers provide ecosystem services by acting as ecosystem engineers, habitat modifiers, and facilitator species. However, we know little about woodpecker requirements for persistence in urban settings. We documented minimum area requirements (MAR) and sources of variation in abundance of 5 woodpecker species in 36 green spaces in Portland, Oregon, in 2015 and 2016. Except for the ground-foraging Northern Flicker, MAR increased with body size, ranging from 1.3 ha for the small Downy Woodpeckers (27.5 g) to 51 ha for the large Pileated Woodpecker (300 g). Abundance of all species increased with green space area, and except for Northern Flickers, was higher in natural than manic","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114219332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global positioning system (GPS) and platform transmitter terminal (PTT) tags reveal fine-scale migratory movements of small birds: A review highlights further opportunities for hypothesis-driven research","authors":"A. R. Iverson, Jessica L B Schaefer, Shannon M. Skalos, C. Hawkins","doi":"10.1093/ornithapp/duad014","DOIUrl":"https://doi.org/10.1093/ornithapp/duad014","url":null,"abstract":"ABSTRACT Studying migration is critically important for understanding the full-annual cycle of migrating birds and aids in management and conservation. In recent years, global positioning system (GPS) and platform transmitting terminal (PTT) tags have become miniaturized, revolutionizing migration research by allowing for higher location accuracy and global coverage for smaller species. We reviewed 116 primary research papers from 2006 to 2021 that reported on GPS- or PTT-tagged small birds (<500 g) during migration and assessed research aims, tag efficacy, ecological findings, and future opportunities. Reviewed papers covered 58 unique species (nearly half of which were shorebirds) and 65% of studies tagged birds at breeding grounds. Tags that did not require retrieval had higher success obtaining data, with PTT tags having the greatest success (85% of deployed tags had data). Of studies that reported tag load information, most (70%) reported tag loads ≥3% body mass, which is a potential concern given that 3% is considered the preferable upper limit. Most papers (69%) focused on presenting spatial information such as migratory routes, stopover sites, and habitat use, and only 33% of papers tested explicit hypotheses, demonstrating that we are in the early stages of understanding small bird migration at fine scales. Almost all tag deployments (93%) occurred in the northern hemisphere, most often in the United States (24%), indicating a deficiency in GPS and PTT research on small bird migration from the southern hemisphere. GPS and PTT tags have revealed new biological insights not possible with other technologies by providing fine-scale movement data and global coverage. There are exciting opportunities for researchers to move beyond descriptive spatial studies and explore hypothesis-driven migratory research, into topics such as intraspecific variation, carry-over effects, and climate-driven movements for irruptive species. How to Cite Iverson, A. R., J. L. B. Schaefer, S. M. Skalos, and C. E. Hawkins (2023). Global positioning system (GPS) and platform transmitter terminal (PTT) tags reveal fine-scale migratory movements of small birds: A review highlights further opportunities for hypothesis-driven research. Ornithological Applications 125:duad014. LAY SUMMARY Studying migration is critically important for understanding the annual cycle of migrating birds and can help with species management and conservation. In recent years, tracking devices that use satellite technology have become miniaturized, revolutionizing migration research, especially for smaller bird species. We reviewed 116 published scientific articles describing research on small bird (<500 g) migration to understand research goals and limitations, ecological findings, and future opportunities. Reviewed papers covered 58 species tagged mainly at breeding grounds in the Northern Hemisphere. Most papers described basic information about where species moved. Tags that transmitted dat","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126768267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The once-invisible legacy of Elizabeth L. Kerr, a naturalist in the early 20th century, and her contributions to Colombian ornithology","authors":"Juliana Soto-Patiño, Katherine Certuche-Cubillos, Jessica Díaz-Cárdenas, Daniela Garzón-Lozano, Estefanía Guzmán-Moreno, Nelsy Niño-Rodríguez, Natalia J. Pérez-Amaya, N. Ocampo-Peñuela","doi":"10.1093/ornithapp/duad006","DOIUrl":"https://doi.org/10.1093/ornithapp/duad006","url":null,"abstract":"Abstract Mrs. Elizabeth L. Kerr was a bird and mammal collector who traveled to Colombia in the early 20th century when women had very limited access to education or scientific expeditions. Despite her notable contributions to Colombian ornithology, including collecting the holotype of a new species to science (Chocó Tinamou—Crypturellus kerriae), her name is not mentioned in historical accounts of ornithology in Colombia. Here, we describe what we know about Kerr's life as a collector and her legacy in the study of Colombian birds. We highlight the fact that Kerr has become a role model for female naturalists and provide a short account of an all-female ornithological expedition to resurvey one of Kerr's collecting sites. By bringing Kerr's legacy to the public eye, we hope to raise awareness of implicit bias and barriers faced by women in science. How to Cite J. Soto-Patiño, K. Certuche-Cubillos, J. Díaz-Cárdenas, D. Garzón-Lozano, E. Guzmán, N. Niño-Rodríguez, N. Pérez-Amaya, and N. Ocampo-Peñuela (2023).The once-invisible legacy of Elizabeth L. Kerr, a naturalist in the early 20th century, and her contributions to Colombian ornithology. Ornithological Applications 125:duad006. LAY SUMMARY Historically, ornithology has been a male-dominated field. Mrs. Elizabeth Kerr collected birds and mammals in the early 20th century in Colombia, including holotypes of new species and subspecies to science. Kerr's legacy has not been recognized despite her important contributions. We describe Kerr's legacy to Colombian ornithology. Kerr's story inspired an all-female ornithological expedition in 2020. By telling Kerr's story, we aim to raise awareness of implicit biases and barriers faced by women in science. RESUMEN Mrs. Elizabeth L. Kerr fue una recolectora de aves y mamíferos que viajó por Colombia a principios del siglo XX, cuando las mujeres tenían acceso limitado a la educación y a las expediciones científicas. A pesar de sus notables contribuciones a la ornitología colombiana, incluyendo la recolección del holotipo de una especie nueva para la ciencia (Tinamú del Chocó - Crypturellus kerriae), no es mencionada en los textos sobre la historia de la ornitología en Colombia. En esta perspectiva, describimos lo que sabemos de la vida de Kerr como colectora y su legado en el estudio de las aves colombianas. Resaltamos que Kerr se ha convertido en un modelo a seguir para naturalistas mujeres, y proveemos un resumen de la expedición femenina que llevamos a cabo en el 2020 para estudiar aves en una de las localidades visitadas por Kerr. Al contar la historia de Kerr, esperamos crear conciencia sobre los sesgos implícitos y las barreras que afrontan las mujeres en las ciencias.","PeriodicalId":125764,"journal":{"name":"Ornithological Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132027718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}