DOCSLIB.ORG

New Data on Numbers and Distribution of Birds of Prey Breeding in Belarus

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New Data on Numbers and Distribution of Birds of Prey Breeding in Belarus 218 Acta Zoologica Lituanica, 2005, Volumen 15, Numerus 3 ISSN 1392-1657 NEW DATA ON NUMBERS AND DISTRIBUTION OF BIRDS OF PREY BREEDING IN BELARUS Valery Cheslavovich DOMBROVSKI1, Vladimir Valentinovich IVANOVSKI2 1Institute of Zoology NAN B, Akademichnaya 27, 220072 Minsk, Belarus. E-mail: [email protected] 2APB-Birds Conservation Belarus, P.O. Box 306, 220050 Minsk, Belarus. E-mail: [email protected] Abstract. During 19982002, all species of diurnal raptors were counted in Belarus. The method used was observation of a study area with the help of optics from a series of points and subsequent mapping of the hunting and presumed nesting ranges of birds of prey. The total area surveyed was about 9,000 km². Estimated quantity of the species: Honey Buzzard 8,00011,000 pairs; Black Kite 200230; Red Kite 310; White-tailed Eagle 85105; Short-toed Eagle 530700; Marsh Harrier 6,0009,000; Hen Harrier 600800; Montagus Harrier 3,0005,000; Goshawk 3,5005,000; Sparrowhawk 6,500 8,500; Common Buzzard 18,00024,000; Lesser Spotted Eagle 3,2003,800; Greater Spotted Eagle 150200; Golden Eagle 2535; Booted Eagle 1015; Osprey 150180 pairs; Common Kestrel 1,2001,700; Red-footed Falcon 1030; Merlin 300350; Hobby 2,5002,700; Peregrine 03 pairs. Key words: birds of prey, number, distribution, breeding density, Belarus INTRODUCTION (Circus pygargus) and Marsh Harrier (Circus aerugi- nosus) in the last summary on birds of Belarus (Niki- Study of birds of prey in Belarus was rather irregular. forov et al. 1997). In the middle of the 20th century purposeful study of raptors was carried out only in Polesie (southern part of Belarus): in National Park Belovezhskaya pushcha MATERIAL AND METHODS (Datskevich 1997) and to a certain extent in Pripyatski Reserve (Klakotski 1976). Till the beginning of the Field studies 1980s due to contribution of Dr V. Ivanovski the centre During 19992002, in the framework of the project of scientific investigations of birds of prey moved to on study of number and distribution of Greater and Poozerie (northern part of Belarus). The rest of Belarus Lesser Spotted Eagles (Aquila clanga and Aquila territory has befallen from the field of vision of pomarina) in Belarus, supported by the RSPB, the specialists, and the materials during this time were col- BirdLife International partner in the UK, the counts of lected occasionally, at the same time with other counts rare birds of prey were carried out in the territory of of birds in the course of different faunistic expeditions. the Republic of Belarus. The counts of rare breeding As a result, last population estimates for birds of prey raptor species were carried out in 81 census plot with usually were based on materials obtained in Poozerie area of about 9,000 km². Additionally we used the data (northern part of Belarus) (Ivanovski 1990a, b; Red collected during different faunistic studies in 1993 Data Book of the Republic of Belarus 1993; Hagemeijer 2000 and results of counts of birds of prey in Polesski & Blair 1997). It has unpleasant consequences: popu- radio-ecological reserve in 1998 during expedition of lation estimates for some species with high numbers the Institute of Zoology, National Academy of Sciences in southern Belarus were lowered (Greater Spotted of the Republic of Belarus. Eagle (Aquila clanga), White-tailed Eagle (Haliaeetus The main method used in counting was visual obser- albicilla), Hen Harrier (Circus cyaneus)). It is necessary vation with the help of binoculars and telescopes (2060×) to mention also that attention of ornithologists was at- from a series of points at 23 km from each other and tracted mainly by rare species. Any census data on at a distance of 5001,000 m from the edge of the common species were absent. It was a reason of erro- forest observed (Dombrovski 1998a). The points were neous population estimates for several common species located so as each forest sector could be viewed several (for example, Honey Buzzard (Pernis apivorus), times from different perspectives. When suitable open Common Buzzard (Buteo buteo), Montagus Harrier areas were absent, counting from tops of tall trees 219 New data on numbers and distribution of birds of prey breeding in Belarus standing out above the area was practised. Duration of tification. Special attention was paid to birds with observation sessions was at least four hours. Best timing nesting behaviour (display, alert, aggressiveness, of observation was 10:00 a.m. 3:00 p.m., i.e. the bringing construction material and foodstuff to the time of main summer activity of birds of prey. On nest). Later the borders of the hunting and presumed cloudy and rainy days counts would either be cancelled nesting ranges were mapped. for the whole day, or would only start from the moment when permanent fine weather has re-established. Calculation of total population estimates of the Majority of study plots was inspected twice: in late birds of prey AprilMay during the period of active displays for main Study plots were selected in such a way, that all 25 geo- part of species of birds of prey, and in late JuneJuly, botanical units according to the scheme of Yurkevich et when adults actively hunt to rear the nestlings. al. (1979) were comprehended (Table 1, Fig. 1). All distinctive features of birds under observation were We used somewhat different approaches to calculate recorded (peculiar plumage colour, absence of pen- the population numbers of different species: feathers and tail feathers) for their individual iden- For the species which were recorded in our region dur- Table 1. Number and distribution of study plots for rare birds of prey species according to geo-botanical division of Belarus. See also Figure 1. Region Geo-botanical unit Area, km2 Number of plots Area of plots, km2 01 012,220 07 0,587 02 012,000 14 0,951 Region of lakes (Poozerie) 03 000,990 01 0,078 04 007,800 03 0,275 Total 033,010 25 1,891 05 007,075 06 0,386 MinskOshmiany 06 001,875 01 0,106 07 019,000 05 0,392 Total 027,950 12 0,884 08 014,500 02 0,230 OrshaMogilev 09 006,000 01 0,288 10 003,750 01 0,060 11 005,250 02 0,302 Total 029,500 06 0,880 12 012,150 07 0,332 13 002,750 03 0,304 Region of Neman 14 009,000 01 0,290 15 001,500 02 0,206 16 009,600 02 0,227 Total 035,000 15 1,359 17 008,600 03 0,286 Lower Berezina 18 006,000 02 0,292 19 011,400 03 0,314 Total 026,000 08 0,892 20 010,600 06 0,448 West Polesie 21 013,000 08 1,386 Total 023,600 14 1,834 22 008,300 02 0,300 23 005,000 02 0,264 East Polesie 24 006,400 03 0,447 25 012,250 05 0,400 Total 031,950 12 1,411 Grand total 207,010 92 9,151 220 Dombrovski V. C., Ivanovski V. V. given species was not counted in any geo-botanical unit, this district was excluded from further calculations of total population estimates. The calculations were based on vegetation map (1:500,000) and physio- geographical map (1:100,000 or 1:200,000). For the species that avoid the neighbourhood with man (Greater Spotted Eagle, Short-toed Eagle) we corrected the estimates according to the number of populated localities in given area. Counts of common, widely distributed species (Marsh and Montagus Harrier, Honey Buzzard, Common Buz- zard, Sparrowhawk (Accipiter nisus) and Goshawk (Accipiter gentilis)) were carried out in not all geo-bo- tanical regions of Belarus. Thus, we used for extrapo- lation the materials of counts in 25 study plots with total area of about 2,900 km². These study plots were located in main landscape types of Belarus (Table 3). Figure 1. Geo-botanical division of Belarus according to The extrapolation for total Belarus area was carried the scheme of Yurkevich et al. (1979). Numbers correspond out according to mean population density of species to botanical units (see Table 1). and total area of suitable habitats. ing breeding period, but were not counted during our censuses (Red Kite (Milvus milvus), Red-footed Falcon RESULTS AND DISCUSSION (Falco vespertinus) and Peregrine (Falco peregrinus)) we give only available facts of records. Honey Buzzard (Pernis apivorus). Common, widely For Golden Eagle (Aquila chrysaetos) we indicate all distributed species (Tables 3, 4). Till present the popu- known nesting areas where monitoring was carried out. lation numbers were underestimated because of rare For rare and protected species connected with some spe- breeding records (Nikiforov et al. 1997). According to cific habitat types (Black Kite (Milvus migrans), Short- results of our counts, this species is second the most toed Eagle (Circaetus gallicus), Greater and Lesser numerous species after the Common Buzzard. The high- Spotted Eagles, Booted Eagle (Hieraaetus pennatus), est density was recorded in deciduous broad-leaved for- White-tailed Eagle, Hen Harrier, Merlin (Falco ests alternated with open areas (23.4 pairs/100 km²). columbarius), Common Kestrel (Falco tinnunculus) Willingly occupies wet forests in the borders of peat and Hobby (Falco subbuteo)) the calculations were bogs, where sometimes is the most numerous species based on numbers of breeding pairs counted in study among raptors (Dzmitranok & Dombrovski 1999). Does plots (Table 2). The densities were extrapolated on the not avoid the neighbourhood with human settlements. area of suitable habitats for each geo-botanical unit. If So, in suburbs of Minsk in mosaic habitat with small Table 2. Breeding density of some rare bird of prey species in study plots in different geo-botanical regions of Belarus.
Load more

Recommended publications
  • Between West and East People of the Globular Amphora Culture in Eastern Europe: 2950-2350 Bc
    BETWEEN WEST AND EAST PEOPLE OF THE GLOBULAR AMPHORA CULTURE IN EASTERN EUROPE: 2950-2350 BC Marzena Szmyt V O L U M E 8 • 2010 BALTIC-PONTIC STUDIES 61-809 Poznań (Poland) Św. Marcin 78 Tel. (061) 8536709 ext. 147, Fax (061) 8533373 EDITOR Aleksander Kośko EDITORIAL COMMITEE Sophia S. Berezanskaya (Kiev), Aleksandra Cofta-Broniewska (Poznań), Mikhail Charniauski (Minsk), Lucyna Domańska (Łódź), Viktor I. Klochko (Kiev), Jan Machnik (Kraków), Valentin V. Otroshchenko (Kiev), Petro Tolochko (Kiev) SECRETARY Marzena Szmyt Second Edition ADAM MICKIEWICZ UNIVERSITY INSTITUTE OF EASTERN STUDIES INSTITUTE OF PREHISTORY Poznań 2010 ISBN 83-86094-07-9 (print:1999) ISBN 978-83-86094-15-8 (CD-ROM) ISSN 1231-0344 BETWEEN WEST AND EAST PEOPLE OF THE GLOBULAR AMPHORA CULTURE IN EASTERN EUROPE: 2950-2350 BC Marzena Szmyt Translated by John Comber and Piotr T. Żebrowski V O L U M E 8 • 2010 c Copyright by B-PS and Author All rights reserved Cover Design: Eugeniusz Skorwider Linguistic consultation: John Comber Prepared in Poland Computer typeset by PSO Sp. z o.o. w Poznaniu CONTENTS Editor’s Foreword5 Introduction7 I SPACE. Settlement of the Globular Amphora Culture on the Territory of Eastern Europe 16 I.1 Classification of sources . 16 I.2 Characteristics of complexes of Globular Amphora culture traits . 18 I.2.1 Complexes of class I . 18 I.2.2 Complexes of class II . 34 I.3 Range of complexes of Globular Amphora culture traits . 36 I.4 Spatial distinction between complexes of Globular Amphora culture traits. The eastern group and its indicators . 42 I.5 Spatial relations of the eastern and centralGlobular Amphora culture groups .
    [Show full text]
  • Eastern Marsh Harrier Chu-Hi (Jpn) Circus Spilonotus Morphology and Classification Still Undiscovered Nesting Grounds in Hokkaido in Particular
    Bird Research News Vol.7 No.5 2010.5.20. Eastern Marsh Harrier Chu-hi (Jpn) Circus spilonotus Morphology and classification still undiscovered nesting grounds in Hokkaido in particular. The total population of the species wintering in Japan, on the other hand, has not been counted except for the roosting number of some Classification: Accipitriformes Accipitridae areas, such as Watarase Marsh, Tochigi Pref., central Japan. Total length: ♂ 480mm ♀ 580mm Wing length: 380-430mm Wingspan: 1132-1372mm Nest: Tail length: 215-262mm Culmen length: 28-31mm They build a nest in wet reed beds or the dry tall grassland of Japa- Tarsus length: 85-91mm Weight: 498-844g nese pampas grass (Miscanthus sinensis), etc., piling up dry grass on the ground (Nishide 1979, Tada 2007, Naya et. al. 2007, Chiba Measurements after Enomoto (1941). 2008). The nest size is about 110-130cm by 80-90cm (Chiba 2008, Naya et al. 2007). Appearance: The plumage coloration of East- Egg: ern Marsh Harriers is basically They lay an egg at 3.3 day intervals on average (Nishide 1979). brownish, but varies considera- The clutch size is 4-7 eggs (Chiba 2008, Nishide 1979). The egg bly (Morioka et al. 1995). There size is 48.0mm by 38.0mm on average (n = 5) (Chiba 2008). The are types such as totally dark egg color is grayish white (Chiba 2008). brown, off-white from the head to the leading edge of a wing, Incubation and nestling periods: and pale brown with a vertical- Females mostly incubate eggs. The incubation period is about 28- striped underpart, bluish gray 34 days (Chiba 2008).
    [Show full text]
  • A Multi-Gene Phylogeny of Aquiline Eagles (Aves: Accipitriformes) Reveals Extensive Paraphyly at the Genus Level
    Available online at www.sciencedirect.com MOLECULAR SCIENCE•NCE /W\/Q^DIRI DIRECT® PHYLOGENETICS AND EVOLUTION ELSEVIER Molecular Phylogenetics and Evolution 35 (2005) 147-164 www.elsevier.com/locate/ympev A multi-gene phylogeny of aquiline eagles (Aves: Accipitriformes) reveals extensive paraphyly at the genus level Andreas J. Helbig'^*, Annett Kocum'^, Ingrid Seibold^, Michael J. Braun^ '^ Institute of Zoology, University of Greifswald, Vogelwarte Hiddensee, D-18565 Kloster, Germany Department of Zoology, National Museum of Natural History, Smithsonian Institution, 4210 Silver Hill Rd., Suitland, MD 20746, USA Received 19 March 2004; revised 21 September 2004 Available online 24 December 2004 Abstract The phylogeny of the tribe Aquilini (eagles with fully feathered tarsi) was investigated using 4.2 kb of DNA sequence of one mito- chondrial (cyt b) and three nuclear loci (RAG-1 coding region, LDH intron 3, and adenylate-kinase intron 5). Phylogenetic signal was highly congruent and complementary between mtDNA and nuclear genes. In addition to single-nucleotide variation, shared deletions in nuclear introns supported one basal and two peripheral clades within the Aquilini. Monophyly of the Aquilini relative to other birds of prey was confirmed. However, all polytypic genera within the tribe, Spizaetus, Aquila, Hieraaetus, turned out to be non-monophyletic. Old World Spizaetus and Stephanoaetus together appear to be the sister group of the rest of the Aquilini. Spiza- stur melanoleucus and Oroaetus isidori axe nested among the New World Spizaetus species and should be merged with that genus. The Old World 'Spizaetus' species should be assigned to the genus Nisaetus (Hodgson, 1836). The sister species of the two spotted eagles (Aquila clanga and Aquila pomarina) is the African Long-crested Eagle (Lophaetus occipitalis).
    [Show full text]
  • Lesser Spotted Eagle
    Accipitridae: vultures, kites, hawks, eagles, buzzards and harriers 181 Lesser Spotted Eagle 14˚ Gevlekte Arend LESSER SPOTTED EAGLE Aquila pomarina 1 5 This Palearctic migrant from eastern Europe and 18˚ Russia occurs in southern Africa from late Octo- ber (mostly late November) to March. When perched it is essentially a bulky version of Wahl- berg’s Eagle A. wahlbergi in appearance, with a 22˚ pale eye and, in juveniles, white in the tail and 6 wings. The thin leggings and the downward-bent 2 primaries in flight distinguish this from other Aquila species (Brooke et al. 1972), but from a 26˚ distance its silhouette in soaring flight can be con- fused with that of the Hooded Vulture Necrosyrtes monachus. It is perhaps most frequently recorded in the Kruger National Park and the Moremi Game 7 3 30˚ Reserve and Chobe National Park of northern Botswana, where it consorts with migrant Steppe Eagles A. nipalensis. It is usually recorded in woodland regions 4 8 where rainfall exceeds 600 mm. It occurs in lower 34˚ numbers than the Steppe Eagle, in the ratio of 1:5 18˚ 22˚ 26˚ in the Transvaal (Tarboton & Allan 1984). It is 10˚ 14˚ 30˚ 34˚ often seen singly or in small flocks (Steyn 1982b); a flock of at least 250 birds was reported from along the Khwai River (1923B) (Van den Brink et al. 1994). In January 1993, average linear densities from road counts in the Moremi Recorded in 250 grid cells, 5.5% region reached 1 bird/950 m (M. Herremans unpubl. data). Total number of records: 522 Like the Steppe Eagle, it is attracted to the emergence of Mean reporting rate for range: 3.4% termite alates following good rains, and also to Redbilled Quelea Quelea quelea breeding colonies.
    [Show full text]
  • The Upper Dnieper River Basin Management Plan (Draft)
    This project is funded Ministry of Natural Resources The project is implemented by the European Union and Environmental Protection by a Consortium of the Republic of Belarus led by Hulla & Co. Human Dynamics KG Environmental Protection of International River Basins THE UPPER DNIEPER RIVER BASIN MANAGEMENT PLAN (DRAFT) Prepared by Central Research Institute for Complex Use of Water Resources, Belarus With assistance of Republican Center on Hydrometeorology, Control of Radioactive Pollution and Monitoring of Environment, Belarus And with Republican Center on Analytical Control in the field of Environmental Protection, Belarus February 2015 TABLE OF CONTENTS ABBREVIATIONS.........................................................................................................................4 1.1 Outline of EU WFD aims and how this is addressed with the upper Dnieper RBMP ..........6 1.2 General description of the upper Dnieper RBMP..................................................................6 CHAPTER 2 CHARACTERISTIC OF DNIEPER RIVER BASIN ON THE BELARUS TERRITORY.................................................................................................................................10 2.1 Brief characteristics of the upper Dnieper river basin ecoregion (territory of Belarus) ......10 2.2 Surface waters......................................................................................................................10 2.2.1 General description .......................................................................................................10
    [Show full text]
  • Meyburg Paper.Indd
    Raptor Journal 2020, 14: 73 – 76. DOI: 10.2478/srj-2020-0006 © Raptor Protection of Slovakia (RPS) Age of maturity and exceptionally distant natal dispersal of over 500 km by a male lesser spotted eagle Clanga pomarina Vek dospelosti samca orla krikľavého Clanga pomarina a jeho mimoriadne veľký, viac ako 500 km, hniezdny rozptyl Bernd-Ulrich MEYBURG, Hinrich MATTHES & Grzegorz Maciorowski Abstract: According to previous studies using colour rings, lesser spotted eagles Clanga pomarina have established breeding ter- ritories up to 249 km from their natal site. A colour-ringed lesser spotted eagle nestling from NE Poland settled 540 km further west in NE Germany. This male was discovered at the age of six and nested there for several years. This fi nding is all the more remark- able because the bird was a male, which in large eagles typically settle nearer to their natal sites than females. They apparently reproduce successfully for the fi rst time later than females, normally at the age of fi ve. Abstrakt: Na základe predchádzajúcich štúdií využívajúcich značenie farebnými krúžkami je známe, že orly krikľavé Clanga pomarina obsadzujú hniezdne teritóriá do vzdialenosti 249 km od hniezda, kde sa vyliahli. Farebne označený orol krikľavý vyli- ahnutý v SV Poľsku obsadil teritórium 540 km na západe v SV Nemecku. Tento samec bol objavený vo veku šiestich rokov a na tom mieste hniezdil už viacero rokov. Toto zistenie je o to zaujímavejšie, že sa jedná o samca, pretože samce veľkých orlov sa obyčajne usadzujú bližšie k miestu ich vyliahnutia, než samice. Okrem toho sa samce zjavne prvýkrát rozmnožujú neskôr než samice, obyčajne vo veku piatich rokov.
    [Show full text]
  • Effect of Environmental Elements on Migration Pattern of Eagles at Jorbeer Conservation Reserve, Bikaner, Rajasthan, India
    Kataria et al RJLBPCS 2016 www.rjlbpcs.com Life Science Informatics Publications Original Research Article DOI - 10.26479/2016.0203.08 EFFECT OF ENVIRONMENTAL ELEMENTS ON MIGRATION PATTERN OF EAGLES AT JORBEER CONSERVATION RESERVE, BIKANER, RAJASTHAN, INDIA A.K. Kataria1*, N.Kataria2 and R.N.Kumawat3 1.Principal Investigator, Centre for excellence for use of space based technology in animal science, Rajasthan University of Veterinary and Animal Sciences, Bikaner-334001, Rajasthan, India. 2.Professor & Head, Department of Veterinary Physiology, College of Veterinary and Animal Science, Rajasthan University of Veterinary and Animal Sciences, Bikaner-334001, Rajasthan, India. 3. Deputy Forest Officer (Wildlife), Bikaner, Rajasthan ABSTRACT: The present endeavor was carried out to find out the effect of environmental elements on migration pattern of eagles at Jorbeer Conservation Reserve, Bikaner, Rajasthan, India (JCRBRI) during period from April 2015 to July 2016. The eagles studied were steppe eagle (Aquila nipalensis) and greater spotted eagle (Clanga clanga). The greater spotted eagle was seen only from November to February reiterating their winter migration to this reserve. Steppe eagle stayed at reserve during various months of the study year 2015 and 2016 when the THI values varied as 56.64-79.5. Recording of count of steppe eagle and greater spotted eagle besides real-time observation of environmental temperature and humidity signified in monitoring of eagle residence in the region. Result of the endeavor assisted in comprehending the absence of eagles in summer months during study periods. Residential period of steppe eagle was from November to April and of greater spotted eagle was from November to February only.
    [Show full text]
  • Elaboration of Priority Components of the Transboundary Neman/Nemunas River Basin Management Plan (Key Findings)
    Elaboration of Priority Components of the Transboundary Neman/Nemunas River Basin Management Plan (Key Findings) June 2018 Disclaimer: This report was prepared with the financial assistance of the European Union. The views expressed herein can in no way be taken to reflect the official opinion of the European Union. TABLE OF CONTENTS EXECUTIVE SUMMARY ..................................................................................................................... 3 1 OVERVIEW OF THE NEMAN RIVER BASIN ON THE TERRITORY OF BELARUS ............................... 5 1.1 General description of the Neman River basin on the territory of Belarus .......................... 5 1.2 Description of the hydrographic network ............................................................................. 9 1.3 General description of land runoff changes and projections with account of climate change........................................................................................................................................ 11 2 IDENTIFICATION (DELINEATION) AND TYPOLOGY OF SURFACE WATER BODIES IN THE NEMAN RIVER BASIN ON THE TERRITORY OF BELARUS ............................................................................. 12 3 IDENTIFICATION (DELINEATION) AND MAPPING OF GROUNDWATER BODIES IN THE NEMAN RIVER BASIN ................................................................................................................................... 16 4 IDENTIFICATION OF SOURCES OF HEAVY IMPACT AND EFFECTS OF HUMAN ACTIVITY ON SURFACE WATER BODIES
    [Show full text]
  • A Black Kite Milvus Migrans on the Saint Peter and Saint Paul Archipelago, Brazil
    Revista Brasileira de Ornitologia, 23(1), 31-35 March 2015 A Black Kite Milvus migrans on the Saint Peter and Saint Paul Archipelago, Brazil Guilherme T. Nunes1,2,6, Lilian S. Hoffmann3, Bruno C. L. Macena4,5, Glayson A. Bencke3 and Leandro Bugoni1 1 Laboratório de Aves Aquáticas e Tartarugas Marinhas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande – FURG, CP 474, CEP 96203-900, Rio Grande, RS, Brazil. 2 Programa de Pós-Graduação em Oceanografia Biológica, Instituto de Oceanografia, Universidade Federal do Rio Grande – FURG, CP 474, CEP 96203-900, Rio Grande, RS, Brazil. 3 Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, CEP 90690-000, Porto Alegre, RS, Brazil. 4 Laboratório de Oceanografia Pesqueira, Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco – UFRPE, CEP 52171- 900, Recife, PE, Brazil. 5 Programa de Pós-Graduação em Oceanografia, Centro de Tecnologia e Geociências, Departamento de Oceanografia, Universidade Federal de Pernambuco – UFPE, CEP 50740-550, Recife, PE, Brazil. 6 Corresponding author: [email protected] Received on 17 November 2014. Accepted on 16 March 2015. ABSTRACT: The lB ack Kite Milvus migrans is a widespread migratory raptor found over much of the Old World. Vagrants have been widely recorded far from its main migratory routes. Here, we report the occurrence of a Black Kite in the Brazilian Saint Peter and Saint Paul Archipelago (SPSPA) in April/May 2014. The bird remained for 32 days in the SPSPA, disappearing at the end of the rainy season. It looked healthy for most of this period and was once seen preying on a seabird chick.
    [Show full text]
  • <I>MILVUS MIGRANS</I>
    j. RaptorRes. 33(3):207-217 ¸ 1999 The Raptor Research Foundation, Inc. NEST DISPERSION, DIET, AND BREEDING SUCCESS OF BLACK KITES (MILVUS MIGRANS) IN THE ITALIAN PRE-ALPS FABRIZIO SERGIO Edward GreyInstitute of Field Ornithology,Department of Zoology,South Parhs Road, OxfordOX1 3PS, U.K. ALBERTO BOTO Dipartimentodi BiologiaAnimale, Piazza Botta 9, 27100 Pavia, Italy ABSTRACT.--Westudied a population of Black Kites (Milvus migrans)from 1992-96 in a 100-km')study area in the Italian pre-Alps around Lake Lugano. Population densityincreased from 24 territorial pairs per 100 km'• in 1992 to 38 in 1996. Nearest neighbor distanceswere variable, averaging1288 m for solitary pairs (N = 24) and 306 m for colonial ones (N = 151). Regular spacing of nest siteswas the rule within colonies, but inter-nest distance for solitary breeders increased as new pairs settled in the area. Nests occurred both in trees (58%, N = 84) and on cliffs (42%); 23% and 5% (N = 84) of the nestswere originally built by Common Buzzards (Buteobuteo) and Ravens (C0rvuscorax), respectively. Mean laying date was 25 April (N = 42), mean clutch size was 2.29 eggs (N = 42) and mean number of fledged young was 0.97, 1.11, and 1.78 young per territorial, reproductive, and successfulpairs, respectively(N = 143, 95, 78). The percentageof successfulterritorial pairswas 55% (N = 143). Diet was dominated by fish and birds, which accounted for 62% and 28% of 307 identified prey items, respectively.Compared with other European populations, this population showedan intermediate den- sityand an averageclutch sizebut the lowestfledging and breeding successever recorded for the species.
    [Show full text]
  • Iucn Red Data List Information on Species Listed On, and Covered by Cms Appendices
    UNEP/CMS/ScC-SC4/Doc.8/Rev.1/Annex 1 ANNEX 1 IUCN RED DATA LIST INFORMATION ON SPECIES LISTED ON, AND COVERED BY CMS APPENDICES Content General Information ................................................................................................................................................................................................................................ 2 Species in Appendix I ............................................................................................................................................................................................................................... 3 Mammalia ............................................................................................................................................................................................................................................ 4 Aves ...................................................................................................................................................................................................................................................... 7 Reptilia ............................................................................................................................................................................................................................................... 12 Pisces .................................................................................................................................................................................................................................................
    [Show full text]
  • DRIES ENGELEN - [email protected]
    Accounting for differential migration strategies between age groups to monitor raptor population dynamics in the eastern Black Sea flyway (Vansteelant et al. In 2nd review IBIS) DRIES ENGELEN - [email protected] Photo: Adrien Brun One of the world’s largest bottlenecks for raptor migration Based on ‘Raptors of the World’ (Bildstein, 2000) Photo: Adrien Brun Targeted monitoring Priority species, secondary species Using morphological groups MonPalHen, Large Eagle, etc. Quantity vs quality Ageing (& sexing) Photo: John Wright Photo: Adrien Brun Estimated from unidentified Targeted monitoring individuals (%) Species Priority species, secondary species Avg SD Montagu’s Harrier 55,7 10,7 Pallid Harrier 50,5 11,1 Using morphological groups Western Marsh Harrier 0,2 0,1 MonPalHen, Large Eagle, etc. Black Kite 10,0 5,0 Barely mentioned (recorded?) in literature European Honey Buzzard 1,8 1,3 Booted Eagle 0,0 0,0 Quantity vs quality Short-toed Snake Eagle 0,0 0,0 Ageing (& sexing) Lesser Spotted Eagle 43,9 15,6 Photo: Adrien Brun Estimated from unidentified Targeted monitoring individuals (%) Species Priority species, secondary species Avg SD Montagu’s Harrier 55,7 10,7 Pallid Harrier 50,5 11,1 Using morphological groups Western Marsh Harrier 0,2 0,1 MonPalHen, Large Eagle, etc. Black Kite 10,0 5,0 European Honey Buzzard 1,8 1,3 Booted Eagle 0,0 0,0 Quantity vs quality Short-toed Snake Eagle 0,0 0,0 Ageing (& sexing) Lesser Spotted Eagle 43,9 Photo: John15,6 Wright Photo: Adrien Brun Age data is barely used in population trend analyses However 1) Inexperienced juveniles often behave differently than experienced conspecifics (timing, route choice, response to environmental change).
    [Show full text]