Taichi Kato, C. Chiu, Die-Hua Tsai, Elena Pavlenko, M. Kosareva, Hironobu Itou, Haruka Kono
{"title":"Rattling Call of Crested Honey Buzzard Pernis ptilorhynchus","authors":"Taichi Kato, C. Chiu, Die-Hua Tsai, Elena Pavlenko, M. Kosareva, Hironobu Itou, Haruka Kono","doi":"10.2326/osj.22.97","DOIUrl":"https://doi.org/10.2326/osj.22.97","url":null,"abstract":"Abstract We describe, for the first time, the rattling call of the Crested Honey Buzzard Pernis ptilorhynchus. This was previously considered to be a unique vocalization of European Honey Buzzard Pernis apivorus; however, we detected this series of rapidly repeated notes given by an adult female, a second-year, a juvenile and a nestling Crested Honey Buzzard. The rattling calls appeared to be given at times of great excitement, such as to an approaching intruder, mate or parent at the nest, or to a familiar person who usually gave food in the case of captive individuals. The rattling call of an adult female Crested Honey Buzzard at the nest was at a frequency of 2.12 (s.d.±0.07) kHz, and lasted 141 (s.d.±18) ms, which was higher and longer than in European Honey Buzzard.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48678641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Message from the Editor-In-Chief","authors":"T. Mizuta","doi":"10.2326/osj.22.1","DOIUrl":"https://doi.org/10.2326/osj.22.1","url":null,"abstract":"","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48994514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. M. De La Torre, Nicholas Kaminski, Jean Júnior Barcik, Jullio Marques, P. A. Nicola, L. C. M. Pereira
{"title":"Effects of Landscape, Climate and Hunting on the Occurrence of White-Browed Guan Penelope jacucaca in Central-North Caatinga, Brazil","authors":"G. M. De La Torre, Nicholas Kaminski, Jean Júnior Barcik, Jullio Marques, P. A. Nicola, L. C. M. Pereira","doi":"10.2326/osj.22.15","DOIUrl":"https://doi.org/10.2326/osj.22.15","url":null,"abstract":"Abstract The White-browed Guan Penelope jacucaca is an endangered member of the family Cracidae endemic to the Caatinga region of northeast Brazil. Hunting and habitat loss are the presumed major threats to the species, however, their impacts on its occurrence have been insufficiently tested. We used field observations and information on hunting activity to assess whether hunting, landscape and/or climate affect the occurrence of the White-browed Guan in the Caatinga. We sampled 23 localities within the Caatinga and recorded the species' occurrence and hunting encounters. For each locality, we extracted three landscape metrics (vegetation cover, patch aggregation, and patch richness); two climate variables (temperature seasonality and mean precipitation of the wettest month); and one topographic variable (mean slope). We then used generalized linear models based on proportion to determine if the species' occurrence was related to these environmental factors. We found a greater likelihood of detecting the species in localities with greater slope, greater heterogeneity of habitats and more stable temperatures, whereas hunting activity presented a trend of negative impact on occurrence. Our results emphasize the relevance of using different environmental metrics to implement conservation programs for this threatened species.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47431124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Canchao Yang, Xiangyang Chen, Zhengwang Zhang, W. Liang
{"title":"First Report of Home Range Size of Hainan Partridge Arborophila ardens, a Vulnerable Species Endemic to Hainan Island","authors":"Canchao Yang, Xiangyang Chen, Zhengwang Zhang, W. Liang","doi":"10.2326/osj.22.87","DOIUrl":"https://doi.org/10.2326/osj.22.87","url":null,"abstract":"Abstract We used radio telemetry to provide the first information concerning home range size of Hainan Partridge Arborophila ardens, a vulnerable species endemic to Hainan Island, China, in both a fragmented and a continuous natural rainforest. Both the monthly and daily home range sizes of the population in the fragmented rainforest were significantly larger than those in the continuous rainforest, with no difference between males and females. Fragmentation reduced habitat quality and thus may have forced the partridges to forage over a wider range, which may threaten their survival.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47198783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Asian Koel Removes Nestlings of Elliot's Laughingthrush from Their Nest: Farming or Retaliatory Mafia Behavior?","authors":"Hong Zhou, W. Liang","doi":"10.2326/osj.22.93","DOIUrl":"https://doi.org/10.2326/osj.22.93","url":null,"abstract":"Abstract On 13 June 2021, a video was recorded showing an adult female Asian Koel Eudynamys scolopaceus removing three Elliot's Laughingthrush Trochalopteron elliotii nestlings from a nest in a thicket on the banks of Liqiu River in Xinduqiao Town, Kangding, Sichuan, Southwestern China. This is the first record of an Asian Koel removing nestlings from a potential host's nest. Of the various brood parasitism hypotheses, this behavior is most consistent with the farming hypothesis, further suggesting that farming behavior may be a common strategy used by obligate brood parasites.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46603586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haruna Sakamoto, D. Aoki, Shingo Uemura, M. Takagi
{"title":"Genetic Parent-Offspring Relationships Predict Sexual Differences in Contributions to Parental Care in the Eurasian Tree Sparrow","authors":"Haruna Sakamoto, D. Aoki, Shingo Uemura, M. Takagi","doi":"10.2326/osj.22.45","DOIUrl":"https://doi.org/10.2326/osj.22.45","url":null,"abstract":"Abstract Negative relationships between the degree of parental investment and the presence of unrelated offspring in the nest due to extra-pair paternity (EPP) or conspecific brood parasitism (CBP) are predicted in monogamous species. This is because investing in unrelated offspring is costly to individual parents. However, such strategies may be adaptive for one social partner. Because parental investment changes in response to that by the social partner, the predicted relationship needs to be assessed empirically in wild animal populations, with consideration for male and female parental care. Furthermore, both EPP and CBP must be considered simultaneously in such a study. In this study, we tackled the issue using the semi-colonial Eurasian Tree Sparrow Passer montanus, in which both EPP and CBP were predicted to occur. We tested whether there is a negative relationship between the degree of parental care of both males and females and the presence of EPP or CBP, taking into consideration the parental investment of their social partners, using behavioral observations and parentage analyses based on seven microsatellite loci. The results revealed a moderately high frequency of EPP and CBP within a sparrow colony. A negative relationship between parental care by the social male parent and the presence of EPP was suggested, while this was possibly as a result of the increase in parental investment by their female partner. CBP was also inferred to be linked with male parental investment, while females may have compensated for the cost of CBP in their provisioning efforts by egg rejection. High frequencies of occurrence of both EPP and CBP allowed us to shed light on how parental investment is related to the presence of unrelated young in the complex social system of the Eurasian Tree Sparrow.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41420210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chun-Chiu Pang, Yik‐Hei Sung, Y. Chung, Hak-king Ying, Hoi-Ning Helen Fong, Yat-tung Yu
{"title":"Full Migration Routes of Two Little Egrets (Egretta garzetta) Display Breeding and Wintering Site Fidelity","authors":"Chun-Chiu Pang, Yik‐Hei Sung, Y. Chung, Hak-king Ying, Hoi-Ning Helen Fong, Yat-tung Yu","doi":"10.2326/osj.22.81","DOIUrl":"https://doi.org/10.2326/osj.22.81","url":null,"abstract":"Abstract Our study provides the first GPS tracking data of Little Egret Egretta garzetta from an East Asian population. Our two main objectives were to reveal the migratory route and migratory strategy of Little Egret, and to study inter-annual breeding and wintering site fidelity. Our data, from an adult and a juvenile, suggest that this species is a short-distance high-speed migrant using few or no stopover sites. Both individuals displayed high breeding and wintering site fidelity. They also used very small winter home ranges, probably associated with high prey availability in aquaculture ponds.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41298511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Basnet, L. Poudyal, Ganga Shah, Deelip Chand Thakuri, C. Inskipp
{"title":"Cheer Pheasant Catreus Wallichii Distribution in Far-Western Nepal with Notes on Threats","authors":"H. Basnet, L. Poudyal, Ganga Shah, Deelip Chand Thakuri, C. Inskipp","doi":"10.2326/osj.22.57","DOIUrl":"https://doi.org/10.2326/osj.22.57","url":null,"abstract":"Abstract Pheasants remain among the least studied but most popular species targeted by hunters and trappers in many parts of Nepal. Cheer Pheasant Catreus wallichii, is classified as rare and Vulnerable by the International Union for Conservation of Nature, an Endangered species in the National Red List of Birds in Nepal, and one of nine protected priority bird species of Nepal. Despite its global and national significance, it has been declining in Nepal, and in other parts of its range. Snaring and hunting are the main causes for its decline in Nepal. Furthermore, scientific research and conservation efforts for the Cheer Pheasant have been focused on a few Protected Areas (PAs), ignoring the large areas of its range that lie outside the PAs system. Despite the species' occurrence being reported opportunistically, no fieldwork focusing on Cheer Pheasant has been carried out in Far-Western Nepal. Therefore, from 2014 to 2016, a survey and informal interviews were conducted in Baitadi, Achham and Bajura districts of Far-Western Nepal to learn more about the species' status, distribution, and conservation challenges. As a result of this work, Cheer Pheasant has been found in new locations in Nepal, including Pancheshwor Rural Municipality in Baitadi, Mangalsen Municipality in Achham and Badimalika Municipality in Bajura District. The main anthropogenic threats to the species in Far-Western Nepal include trapping, shooting, egg collection, and forest fire. The species has already disappeared from some locations where local people observed them frequently in the past. Therefore, intensive study of the relationship between Cheer Pheasant and underlying threats is necessary. Additionally, conservation campaigns should be focused on hunting groups and local people, as awareness in the region is poor.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44155669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ecological Determinants of Inter-Island Distributions through Occasional Dispersal of Two Closely Related Species, Varied Tit and Cinereous Tit, in the Volcanic Izu Archipelago, Japan","authors":"Kaoru Fujita, G. Fujita, H. Higuchi","doi":"10.2326/osj.22.67","DOIUrl":"https://doi.org/10.2326/osj.22.67","url":null,"abstract":"Abstract Inspired by ecologists R. H. MacArthur and E. O. Wilson, who pioneered the use of islands as ideal model systems for researching the formation and maintenance of biodiversity, we studied two sympatric passerine bird species on a volcanic archipelago, in Japan. We focused on the occupancy and co-occurrence of Varied Tit Sittiparus varius and Cinereous Tit Parus cinereus, both members of the Parus guild, on the Izu Islands. Their populations range from being stable, and co-occurring, to being temporally unstable (with local extinctions, invasions, and species replacement) and even totally absent. Using results from several surveys carried out on the islands over the last 60 years, and our own contemporary surveys, we tested the ecological drivers of inter-island occupancy through occasional dispersal of these two species. We found that both species had positive relationships with island size and vegetation diversity, while Cinereous Tit exhibited a negative associating with distance to the mainland (Honshu, Japan). Cinereous Tit was also negatively correlated with Varied Tit, but their co-occurrence was positively associated with island size, connectivity, and vegetation diversity. We suspect that resource constraints play a significant role in the distributions of the two species on the islands. Varied Tit is dominant over Cinereous Tit, but Cinereous Tit is able to utilize a wider range of habitats and resources. We also discuss the potential for a competition-colonization trade-off for the two species on the islands.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49508804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"First Record of Ural Owl Strix uralensis Nesting on a Steel Tower","authors":"H. Tojo, S. Matsuoka","doi":"10.2326/osj.21.241","DOIUrl":"https://doi.org/10.2326/osj.21.241","url":null,"abstract":"Abstract Ural Owls Strix uralensis often use nest boxes, but there have been few reports of them using other man-made structures. We discovered a Ural Owl nest on a steel tower in a suburban area in Ibaraki Prefecture, central Japan, in May 2019. The nest had been built in a jointed part of the steel frame that supported the body of the tower, which was approximately 10 m-high. In this case, a neighboring shelterbelt seemed to provide the owls with leaf litter for the nest floor and hiding places for the parents and their fledglings.","PeriodicalId":49009,"journal":{"name":"Ornithological Science","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48920770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}