Acrocephalus最新文献

{"title":"Wilson’s Phalarope Phalaropus tricolor – a new species for avifauna of Serbia","authors":"M. Mareš, Draženko Z. Rajković","doi":"10.2478/acro-2020-0003","DOIUrl":"https://doi.org/10.2478/acro-2020-0003","url":null,"abstract":"Wilson's Phalarope Phalaropus tricolor is a swimming sandpiper species of the New World. It is the largest and most terrestrial of the three phalarope species (Hayman et al. 1986), which are broadly known for their reversed sex-role mating system (Colwell & Jehl 2020). Wilson's Phalarope distribution range is entirely continental. It typically breeds in open habitats adjacent to inland wetlands on prairies and agricultural lands in western parts of the United States and southwestern and central Canada (Hayman et al. 1986, Colwell & Jehl 2020). On migration, this species occurs on a wide variety of freshwater lakes, ponds and small pools showing a preference for alkaline waters. Wilson's Phalarope winters in the October–April period across altiplano from Bolivia to Argentina and returns to the breeding grounds in late April and early May (Hayman et al. 1986, Colwell & Jehl 2020). The species is a rare, but regular vagrant in Western Palearctic with most observations reported from British Isles (Alström & Colston 1991). Here, we report on the first observation of Wilson's Phalarope in the territory of Serbia. In the early morning of 22 September 2019, whilst birdwatching on the northern shore of alkaline lake Rusanda close to the village of Melenci (Banat District, Northern Serbia), the first author spotted one individual of Wilson's Phalarope approximately 20 m from the lakeshore (coordinates 45.525952 N, 20.302900 E), foraging together with 12 Dunlins Calidris alpina and three Little Ringed Plovers Charadrius dubius. At first glance, the observer had an impression that it was Marsh Sandpiper Tringa stagnatilis – a regular, but scarce autumn migrant through northern Serbia. Yet, the general structure of the observed bird was pretty different. The observed specimen was notably smaller, short-legged with a thinner and finer bill than Marsh Sandpiper. Besides, the feeding habit significantly differed from that of Marsh Sandpiper. During a short period of observation, the bird was actively feeding in shallow water (1–3 cm deep), making jerky, vigorous darting left-right movements with its head and bill. After five minutes of observation, all the birds flew together to the opposite side of the lake. Before flying off, the observed bird was photographed (Figure 1). Later in the same day, photographs of an unusual bird were displayed by few Internet birding groups, where numerous birdwatchers identified it as Wilson’s Phalarope. Indeed, the additional analysis of photographs by both authors reaffirmed the identification. The observed and photographed specimen was distinguished from similar Grey Phalarope Phalaropus fulicarius and Red-necked Phalarope Phalaropus lobatus by its greyer (paler) plumage, distinctly longer bill, lack of bold black eye-patch and bright yellow colour of legs. Other somewhat similar wader species like Lesser Yellowlegs Tringa flavipes are characterized by their significantly different proportions, behaviour and not so pure whitis","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45907008","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":"Grassland bird species in mountain pastures Zaprikraj and Zapleč in the southern Julian Alps, Slovenia","authors":"Dejan Bordjan","doi":"10.2478/acro-2020-0004","DOIUrl":"https://doi.org/10.2478/acro-2020-0004","url":null,"abstract":"Abstract Grassland birds were surveyed in two mountain pastures (Zaprikraj and Zapleč) in the southern part of the Julian Alps, Slovenia. The survey was carried out during the mornings between 26 and 30 June 2005. Due to the incomplete survey (only one visit, no nocturnal or targeted surveys and late season survey), the surveyed birds’ breeding density is only a rough estimate. 167 pairs belonging to 12 species were counted, with Tree (average density of 1.64 p/10 ha) and Water Pipit (average density of 1.60 p / 10 ha) being the most abundant. Both were observed in all altitudinal belts. The highest density in individual altitudinal belt was calculated for Red-backed Shrike Lanius collurio (3.78 p/10 ha) and Water Pipit (3.61 p/10 ha). In well preserved grasslands in the study area, most species reached high breeding densities compared to other parts of Slovenia and all were recorded higher than during the 1992 survey, although still mostly within limits of the elevations elsewhere in Slovenia. Breeding density of Skylark Alauda arvensis decreased with the elevation. Whinchat Saxicola rubetra, Skylark and Red-backed Shrike used significantly gentler slopes, while Pipits showed no preference for particular slopes.","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44992098","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 Goosander Mergus merganser range expansion on the Balkan Peninsula and a new breeding population in Bulgaria","authors":"D. Dobrev, B. Borisov, Vladimir Dobrev, V. Arkumarev, I. Angelov, Stoycho Stoychev","doi":"10.2478/acro-2020-0002","DOIUrl":"https://doi.org/10.2478/acro-2020-0002","url":null,"abstract":"Abstract The Goosander Mergus merganser was not recorded breeding in Bulgaria till recently. We present herewith the very first record of the species breeding in the country and estimate the size of its breeding population in Bulgaria. Thus, we propose a change in its status in the country with more effort to be invested in the survey of this small, isolated population.","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43908308","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":"Results of the January 2020 waterbird census in Slovenia","authors":"Luka Božič","doi":"10.2478/acro-2020-0005","DOIUrl":"https://doi.org/10.2478/acro-2020-0005","url":null,"abstract":"","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42115941","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":"Population dynamics and habitat use by Northern Lapwing Vanellus vanellus in agricultural landscape of Dravsko and Ptujsko polje (NE Slovenia)","authors":"Eva Horvat, D. Denac","doi":"10.1515/acro-2019-0009","DOIUrl":"https://doi.org/10.1515/acro-2019-0009","url":null,"abstract":"Abstract The Northern Lapwing numbers across Europe are declining owing to its insufficient breeding success. To determine the size, dynamics and habitat use of the lapwing population at Dravsko and Ptujsko polje, a survey was carried out between 2016 and 2018. In 2016, 2017 and 2018, we recorded 148, 130, and 117 pairs, respectively. The population declined during the study and the population trend is uncertain. Approximately 12 to 21% of the national lapwing population was recorded at Dravsko and Ptujsko polje, making them one of the most important breeding areas in Slovenia. The majority of lapwings were found in bare tilled fields and fields with young spring crops that enable unbroken all-round views. Crop data analysis showed a significant preference for maize fields which are mostly bare tillage at the start of the incubation period and therefore act as an ecological trap for lapwings due to the time coincidence of the nesting period and farming operations. For the protection of the lapwing in Slovenia, we recommend a time limit of farming operations or avoiding individual nests while working in the field. Both measures are recommended to be implemented in combination with the provision of suitable foraging habitat for chicks. For greater effectiveness, we propose priority implementation of conser vation measures on traditiona l breeding sites.","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42905100","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":"Results of the January 2019 waterbird census in Slovenia","authors":"Luka Božič","doi":"10.1515/acro-2019-0011","DOIUrl":"https://doi.org/10.1515/acro-2019-0011","url":null,"abstract":"","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42483907","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":"Rare birds in Slovenia in 2018 – Slovenian Rarities Committee Report","authors":"Mitja Denac, J. Hanžel, Dejan Bordjan, Luka Božič, M. Vogrin","doi":"10.1515/acro-2019-0012","DOIUrl":"https://doi.org/10.1515/acro-2019-0012","url":null,"abstract":"","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44588930","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":"Massive irruptions of the Siberian Nutcracker subspecies Nucifraga caryocatactes macrorhynchos into Europe and Slovenia to date","authors":"F. Bračko","doi":"10.1515/acro-2019-0010","DOIUrl":"https://doi.org/10.1515/acro-2019-0010","url":null,"abstract":"","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48761799","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":"37 years of Common Tern Sterna hirundo breeding at Sečovlje Salina","authors":"Iztok Škornik","doi":"10.1515/acro-2019-0008","DOIUrl":"https://doi.org/10.1515/acro-2019-0008","url":null,"abstract":"Abstract Years ago, the Common Tern Sterna hirundo was known to nest in Slovenia along larger watercourses. Today it only breeds locally in artificially built nesting areas. On the seashore, its nesting was confirmed for the first time in 1983, when 9 pairs bred in the Sečovlje Saltpans. In the same year, we started mapping the breeders in the Sečovlje Saltpans, which has continued till this very day. Since 2010, we have been systematically collecting data on the number of fledged birds. In 1991, the number of breeding pairs increased, which coincides with the increase in other parts of the Mediterranean. Since 1991, the size of the breeding population has been quite stable, ranging from 30 to 70 pairs. The Common Tern’s breeding success in the Sečovlje Saltpans is poor, mainly due to precipitation (40% of all unsuccessful nests) and predation (35%). Long, dry periods without rainfall have a positive effect on the hatching and fledging success. Appropriate water management, artificial islands and access to nesting sites control can prevent the disturbance caused by visitors and, in part, predators such as foxes and martens. At the Sečovlje Saltpans, the Common Tern’s survival depends entirely on the active management. The expected climate change, with increasing sea level rise and consequently more frequent flooding of low-lying areas, further aggravates its existence and survival in the Sečovlje Saltpans.","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44246354","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":"Dynamics of Common Sterna hirundo and Little Tern Sternula albifrons populations along the Sava River in North-western Croatia between 2002 and 2019","authors":"J. Kralj, M. Martinović, Tomica Rubinić, Davor Krnjeta, L. Jurinović","doi":"10.1515/acro-2019-0002","DOIUrl":"https://doi.org/10.1515/acro-2019-0002","url":null,"abstract":"Abstract Between 2002 and 2019, monitoring of Common Tern Sterna hirundo and Little Tern Sternula albifrons along the Sava River near Zagreb, Croatia was conducted. Natura 2000 site “Sava kod Hrušćice” was designated to protect colony at river islands, with estimated population sizes of 100–150 pairs of Common and 20 pairs of the Little Tern. Flooding of the colony caused breeding failure in several years. Common Terns moved to breed on islands in gravel pits with a total population around 150 pairs, while Little Tern did not breed after 2010. In the last few years, terns have not bred at Hrušćica and the only colony inside the Natura 2000 site is situated on a breeding platform at Siromaja gravel pit. Channelling of rivers and hydropower plants are the main threats, changing natural dynamics of water level and causing reduction of gravel sediment in rivers.","PeriodicalId":53560,"journal":{"name":"Acrocephalus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46940049","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}