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Scopoli, 1769, Nesting at a Distance of Only 40 M Apart
Verslagen en technische gegevens Territorial behaviour and food composition of two pairs of the little owl I Athene noctua Scopoli, 1769, nesting at a distance of only 40 m apart DARIA BACIA Institute for Systematics and Population Biology (Zoological Museum) University of Amsterdam PO Box 94766,1090 GT Amsterdam The Netherlands No. 75, May 1998 ISSN 1385-3279 VERSLAGEN EN TECHNISCHE GEGEVENS Territorial behaviour and food composition of two pairs of the little owl Athene noctua Scopoli, 1769, nesting at a distance of only 40 m apart Daria Bacia Institute for Systematics and Population Biology (Zoological Museum) University of Amsterdam PO Box 94766,1090 GT Amsterdam The Netherlands No. 75, May 1998 ISSN 1385-3279 Index Introduction 1 Study area 3 Methods 4 Results I. Breeding time 5 II. Places of occurrence and directions of movements 7 III. Time of activity 8 IV. Antagonistic behaviour 8 V. Food 9 Discussion I. Territorial behaviour 10 II. Food 11 Conclusions 12 Acknowledgements 13 Literature 14 Map 16 Tables 18 Pictures 20 INTRODUCTION The little owl Athene noctua (Scopoli, 1769) is a small, nocturnal predator, most active from dusk to dawn, with a two-hour break after midnight. There is little or no hunting during daytime, not even when the birds are raising young (Cramp, 1985). Contrary to these observations, the histology of the retina of the little owl was found to be quite similar to that of diurnal birds, and its colour vision has been reported to be as good as ( the song thrush’s Turdus philomelos; Voous, 1988), suggesting that the little owl may be more diurnal than usually expected. -
Ringing Report 1
RINGING REPORT 1 RINGING REPORT ——— PAUL ROPER http://www.lnhs.org.uk/Publications.html#LBR2013 inging in London is carried out by a range of groups, partnerships and individuals. R Accurate figures rely on all ringers returning ringing data to a central point for analysis to enable a comprehensive report to be written. Due to the complexity, size and transient nature of ringing in the LNHS recording area (the London Area) it is still unclear if all the ringing activity has been covered in any one year. Attempting to make any scientific comparisons on ringing data between years can therefore be rather meaningless and is not addressed in this report. Numbers of many species ringed vary year on year due to a range of factors such as ringer effort, and coverage or weather conditions which can have a marked effect on catching success and final totals for any year. For these reasons, many changes in species figures in this type of report are not a reflection on population levels but more often ringer activity or submission of records. A good reflection of population levels is through Constant Effort Sites (CES), and a number are running in the London Area; the data is pooled nationally and can be found on the British Trust for Ornithology (BTO) website: www.bto.org/volunteer-surveys/ringing/surveys/ces The BTO also provides online data for ringing in the UK, set out on a County basis which unfortunately is not a true reflection of ringing activities within the London Area. It only covers Greater London, which for 2013 shows a total of only 4,901 birds ringed against the total of 13,826 birds ringed which has been submitted for the London Area. -
OSNZ News Edited by PAUL SAGAR, 21362 Hereford Street, Christchurch, for the Members of the Ornithological Society of New Zealand (Inc.)
Supplement to Notornis, Vol. 25, Part 3, September 1978 OSNZ news Edited by PAUL SAGAR, 21362 Hereford Street, Christchurch, for the members of the Ornithological Society of New Zealand (Inc.). No. 8 September 1978 NOTE: Next deadline is earlier to try to beat the Christmas and January shut- Deadline for the December issue will be down of printers and have NOTORNIS 20 November. and OSNZ NEWS out early in 1979. DACHICKS Rough estimates: northland 150-200; The 1978 inquiry into the NZ Dabchick has gone remarkably well, with North Island Volcanic Plateau 600-800; South Taranakii members putting in a lot of time, often with meagre results, in order to help form an overall Wanganui 30; ManawatulWairarapa 300; picture of the status and habits of this species. GisborneiHawkes Bay 50. Total 1 150-1400. We began with a series of questions, to which we now have much better answers. If We thus already have a fairly good base members can stand it, we need another year's effort to confirm and clarify these answers. line agalnst which to measure any major changes in the future. Another year's f~eld 1. Is the NZ Dabchick extinct in the South Island? Answer, apparently yes. Was it ever work should cons~derably Improve the strong there? Possibly not (see Oliver). accuracy of our knowledge. 2. Does the North Island population reach a total of 1000? Answer, yes. Est~matedtotal Regional activity (very rough, see below) 1 1 50-1400 birds. We have no up-tb-date report from Far 3. Are Australian grebelets taking over? Answer, in North Island, not yet. -
Birds of Chile a Photo Guide
© Copyright, Princeton University Press. No part of this book may be 88 distributed, posted, or reproduced in any form by digital or mechanical 89 means without prior written permission of the publisher. WALKING WATERBIRDS unmistakable, elegant wader; no similar species in Chile SHOREBIRDS For ID purposes there are 3 basic types of shorebirds: 6 ‘unmistakable’ species (avocet, stilt, oystercatchers, sheathbill; pp. 89–91); 13 plovers (mainly visual feeders with stop- start feeding actions; pp. 92–98); and 22 sandpipers (mainly tactile feeders, probing and pick- ing as they walk along; pp. 99–109). Most favor open habitats, typically near water. Different species readily associate together, which can help with ID—compare size, shape, and behavior of an unfamiliar species with other species you know (see below); voice can also be useful. 2 1 5 3 3 3 4 4 7 6 6 Andean Avocet Recurvirostra andina 45–48cm N Andes. Fairly common s. to Atacama (3700–4600m); rarely wanders to coast. Shallow saline lakes, At first glance, these shorebirds might seem impossible to ID, but it helps when different species as- adjacent bogs. Feeds by wading, sweeping its bill side to side in shallow water. Calls: ringing, slightly sociate together. The unmistakable White-backed Stilt left of center (1) is one reference point, and nasal wiek wiek…, and wehk. Ages/sexes similar, but female bill more strongly recurved. the large brown sandpiper with a decurved bill at far left is a Hudsonian Whimbrel (2), another reference for size. Thus, the 4 stocky, short-billed, standing shorebirds = Black-bellied Plovers (3). -
The Summer Diet of the Little Owl &Lpar;<I>Athene Noctua</I>
280 SHORT COMMUNICATIONS VOL. 31, NO. 3 j RaptorRes. 31 (3):280-282 ¸ 1997 The Raptor ResearchFoundation, Inc. THE SUMMERDIET OF THE LITTLE OWL (ATHENENOCTUA) ON THE ISLAND OF ASTIPALAIA(DODECANESE, GREECE) FRANCESCO M. ANGELICI AND LEONARDO EATELLA Dipartimentodi BiologiaAnimale e dell'Uomo,Universitd di Roma "La Sapienza," viale dell'Universitd32, 1-00185Roma, Italy LUCA LUISELLI Dipartimentodi BiologiaAnimale e dell'Uomo, Universitddi Roma "La Sapienza,"via A. Borelli50, 1-00161Roma, Italy FRANCESCO RIGA Istituto Nazionale della Fauna Selvatica, via Ca' Fornacetta 9, 1-40064 Ozzanodell•milia (Bologna),Italy KEY WORDS: Athene noctua; Little Owl; diet;,Dodecanese, alba).We recentlyreported the first recordsof Barn Owls Greece. on the island (Angelici et al. 1992). Owl pelletswere collectedin abandonedbuildings and at Widespreadand easyto studytaxa are ideal modelsfor a few rocky sites.The collectedmaterial was identified in the laboratory.Small mammals and reptileswere identified analysesof life-historydivergence, because they permit by skulland mandibularremains, and arthropodsby chitin- comparisonsthat are not confoundedby genetically-cod- ous exoskeletonremains. We counted,in the most parsi- ed divergencein other morphological,behavioral and moniousway possible, the frequencyof occurrenceof each ecologicaltraits (Luiselli et al. 1996a, 1996b). The prob- prey speciesin the diet. Although it was not possibleto lem, however,is to find specieswhose life history traits identify Crociduraremains to specieslevel, we assumedthey have been adequately studied in different portions of all belonged to C. suaveolens,a species widespread in the their range. In general, Palearcticowls have a great deal Dodecanese islands (Niethammer 1989). of potential in this area becauseseveral aspects of their Statisticalanalyses were performed by a STATISTICA biology such as food habits have been studied in detail (version 4.5, 1993) for WindowsPC package,with a set at 5%. -
Ecological Landscape Analysis of Clare Ecodistrict 730 40
Ecological Landscape Analysis of Clare Ecodistrict 730 40 © Crown Copyright, Province of Nova Scotia, 2014. Ecological Landscape Analysis, Ecodistrict 730: Clare Prepared by the Nova Scotia Department of Natural Resources Authors: Western Region DNR staff ISBN 978-1-55457-598-5 This report, one of 38 for the province, provides descriptions, maps, analysis, photos and resources of the Clare Ecodistrict that can help landowners and planners understand important characteristics of the landscape. The report details the main elements in the ecodistrict and, of particular interest to woodland owners, vegetation types within forest stands. Ecological Landscape Analysis (ELA) is a first step in developing an ecosystem approach to managing resource values at a landscape level. It supports planning by landowners wanting to understand how their land fits into the landscape ecosystem. Additional direction will be provided by a landscape planning guide, and internet-based inventory update system, both of which are currently under development. The ELAs were analyzed and written from 2005 – 2009. They provide baseline information for this period in a standardized framework of ecosystem mapping and data summary designed to support future data updates, forecasts and trends. This document includes Part 1 – Learning about what makes this ecodistrict distinctive – and Part 2 – How woodland owners can apply landscape concepts to their woodland. Part 3 – Greater detail for forest planners and analysts – will be available on request by contacting DNR officials -
Pre–Release Training of Juvenile Little Owls Athene Noctua to Avoid Predation
Animal Biodiversity and Conservation 34.2 (2011) 389 Pre–release training of juvenile little owls Athene noctua to avoid predation R. Alonso, P. Orejas, F. Lopes & C. Sanz Alonso, R., Orejas, P., Lopes, F. & Sanz, C., 2011. Pre–release training of juvenile little owls Athene noctua to avoid predation. Animal Biodiversity and Conservation, 34.2: 389–393. Abstract Pre–release training of juvenile little owls Athene noctua to avoid predation.— Anti–predator training of juvenile little owls was tested in a sample of recovered owls raised in captivity in Brinzal Owl Rescue Center (Madrid, Spain). Mortality caused by predators has been described previously in released individuals. Nine little owls were conditioned during their development to a naturalized goshawk and a large live rat, whose presence was paired to the owl’s alarm call. All nine owls and seven non–trained individuals were then released during the late summer and autumn and radio–tracked for six weeks to test their survival. In total 71.4% of the trained owls survived while only the 33.3% of the untrained group were alive at the end of week six. The only cause of death that was detected was predation. Antipredator training, therefore, seems to be beneficial in maximizing survival after the release of juvenile little owls. Key words: Little owl, Athene noctua, Reintroduction, Release, Survival, Antipredator training. Resumen Entrenamiento antes de la liberación en mochuelos europeos Athene noctua para evitar su depredación.— Un entrenamiento sobre mochuelos juveniles para evitar la depredación, se ha testado en una muestra de ejem- plares recuperados y criados en el Centro de Recuperación de Rapaces Nocturnas Brinzal (Madrid, España). -
Otago Region Newsletter 2/2019 February 2019
Birds New Zealand PO Box 834, Nelson. osnz.org.nz Regional Representative: Mary Thompson 197 Balmacewen Rd, Dunedin. [email protected] 03 4640787 Regional Recorder: Richard Schofield, 64 Frances Street, Balclutha 9230. [email protected] Otago Region Newsletter 2/2019 February 2019 photo Nick Beckwith If this were one of those "old fashioned" magazines that turned up in your mailbox, assuming you'd paid the subscription on time, then this photo of a Gannet diving into the surf at Warrington beach would surely be on the front cover. Several other photos by Nick appear later in this newsletter. 2 Ornithological Snippets photo Stuart Kelly It’s been fairly quiet this month. Single Fiordland Crested Penguins were reported from Nugget Point on 29th January, and at Katiki Point on 12th February. 43 Black-fronted Terns were roosting on the river in Balclutha on 15th February, while an Arctic Skua was seen from Taiaroa Head on 18th (the only other Otago sighting so far this season was at Katiki Point on 14th January). Sharon Roberts saw lots of Sooty Shearwaters offshore at Jacks Bay on 28th January, along with 2 Peafowl nearby, and 2 Grey-tailed Tattlers at Cabbage Point. A returning White Heron was at Tomahawk Lagoon on 12th & 19th February, and one was reported from Saint Leonards on 15th. The only passerine on offer this month is a leucistic House Sparrow at Mosgiel, seen and photographed by Robert Budd. 3 The following two pieces are related by Maree Johnstone. Members may have noticed a photo of a Paradise Duck family taken by Stephen Jaquiery at Burkes Inlet and published in the ODT in November 2018. -
Owls.1. Newton, I. 2002. Population Limitation in Holarctic Owls. Pp. 3-29
Owls.1. Newton, I. 2002. Population limitation in Holarctic Owls. Pp. 3-29 in ‘Ecology and conservation of owls’, ed. I. Newton, R. Kavenagh, J. Olsen & I. Taylor. CSIRO Publishing, Collingwood, Australia. POPULATION LIMITATION IN HOLARCTIC OWLS IAN NEWTON Centre for Ecology and Hydrology, Monks Wood, Abbots Ripton, Huntingdon, Cambridgeshire PE28 2LS, United Kingdom. This paper presents an appraisal of research findings on the population dynamics, reproduction and survival of those Holarctic Owl species that feed on cyclically-fluctuating rodents or lagomorphs. In many regions, voles and lemmings fluctuate on an approximate 3–5 year cycle, but peaks occur in different years in different regions, whereas Snowshoe Hares Lepus americanus fluctuate on an approximate 10-year cycle, but peaks tend to be synchronised across the whole of boreal North America. Owls show two main responses to fluctuations in their prey supply. Resident species stay on their territories continuously, but turn to alternative prey when rodents (or lagomorphs) are scarce. They survive and breed less well in low than high rodent (or lagomorph) years. This produces a lag in response, so that years of high owl densities follow years of high prey densities (examples: Barn Owl Tyto alba, Tawny Owl Strix aluco, Ural Owl S. uralensis). In contrast, preyspecific nomadic species can breed in different areas in different years, wherever prey are plentiful. They thus respond more or less immediately by movement to change in prey-supply, so that their local densities can match the local food-supply at the time, with minimum lag (examples: Short-eared Owl: Asio flammeus, Long-eared Owl A. -
Nocturnal Roost on South Carolina Coast Supports Nearly Half of Atlantic Coast Population of Hudsonian Whimbrel Numenius Hudsonicus During Northward Migration
research paper Wader Study 128(2): xxx–xxx. doi:10.18194/ws.00228 Nocturnal roost on South Carolina coast supports nearly half of Atlantic coast population of Hudsonian Whimbrel Numenius hudsonicus during northward migration Felicia J. Sanders1, Maina C. Handmaker2, Andrew S. Johnson3 & Nathan R. Senner2 1South Carolina Department of Natural Resources, 220 Santee Gun Club Road, McClellanville, SC 29458, USA. [email protected] 2Dept. of Biological Sciences, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA 3Cornell Lab of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, New York 14850, USA Sanders, F.J., M.C. Handmaker, A.S. Johnson & N.R. Senner. Nocturnal roost on South Carolina coast supports nearly half of Atlantic coast population of Hudsonian Whimbrel Numenius hudsonicus during northward migration. Wader Study 128(2): xxx–xxx. Hudsonian Whimbrel Numenius hudsonicus are rapidly declining and understanding Keywords their use of migratory staging sites is a top research priority. Nocturnal roosts are site fidelity an essential, yet often overlooked component of staging sites due to their apparent rarity, inaccessibility, and inconspicuousness. The coast of Georgia and stopover South Carolina is one of two known important staging areas for Atlantic coast staging area Whimbrel during spring migration. Within this critical staging area, we discovered the largest known Whimbrel nocturnal roost in the Western Hemisphere at population estimate Deveaux Bank, South Carolina. Surveys in 2019 and 2020 during peak spring management migration revealed that Deveaux Bank supports at least 19,485 roosting Whimbrel, conservation which represents approximately 49% of the estimated eastern population of Whimbrel and 24% of the entire North American population. -
In the Cape Verde Islands
ZOOLOGIA CABOVERDIANA REVISTA DA SOCIEDADE CABOVERDIANA DE ZOOLOGIA VOLUME 5 | NÚMERO 1 Abril de 2014 ZOOLOGIA CABOVERDIANA REVISTA DA SOCIEDADE CABOVERDIANA DE ZOOLOGIA Zoologia Caboverdiana is a peer-reviewed open-access journal that publishes original research articles as well as review articles and short notes in all areas of zoology and paleontology of the Cape Verde Islands. Articles may be written in English (with Portuguese summary) or Portuguese (with English summary). Zoologia Caboverdiana is published biannually, with issues in spring and autumn. For further information, contact the Editor. Instructions for authors can be downloaded at www.scvz.org Zoologia Caboverdiana é uma revista científica com arbitragem científica (peer-review) e de acesso livre. Nela são publicados artigos de investigação original, artigos de síntese e notas breves sobre zoologia e paleontologia das Ilhas de Cabo Verde. Os artigos podem ser submetidos em inglês (com um resumo em português) ou em português (com um resumo em inglês). Zoologia Caboverdiana tem periodicidade bianual, com edições na primavera e no outono. Para mais informações, deve contactar o Editor. Normas para os autores podem ser obtidas em www.scvz.org Chief Editor | Editor principal Dr Cornelis J. Hazevoet (Instituto de Investigação Científica Tropical, Portugal); [email protected] Editorial Board | Conselho editorial Dr Joana Alves (Instituto Nacional de Saúde Pública, Praia, Cape Verde) Prof. Dr G.J. Boekschoten (Vrije Universiteit Amsterdam, The Netherlands) Dr Eduardo Ferreira (Universidade de Aveiro, Portugal) Rui M. Freitas (Universidade de Cabo Verde, Mindelo, Cape Verde) Dr Javier Juste (Estación Biológica de Doñana, Spain) Evandro Lopes (Universidade de Cabo Verde, Mindelo, Cape Verde) Dr Adolfo Marco (Estación Biológica de Doñana, Spain) Prof. -
Differentially Expressed Genes Match Bill Morphology and Plumage Despite Largely Undifferentiated Genomes in a Holarctic Songbird
Molecular Ecology (2015) doi: 10.1111/mec.13140 Differentially expressed genes match bill morphology and plumage despite largely undifferentiated genomes in a Holarctic songbird NICHOLAS A. MASON*† and SCOTT A. TAYLOR*† *Department of Ecology and Evolutionary Biology, Cornell University, 215 Tower Rd., Ithaca, NY 14853, USA, †Fuller Evolutionary Biology Program, Laboratory of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14850, USA Abstract Understanding the patterns and processes that contribute to phenotypic diversity and speciation is a central goal of evolutionary biology. Recently, high-throughput sequencing has provided unprecedented phylogenetic resolution in many lineages that have experienced rapid diversification. The Holarctic redpoll finches (Genus: Acanthis) provide an intriguing example of a recent, phenotypically diverse lineage; traditional sequencing and genotyping methods have failed to detect any genetic differences between currently recognized species, despite marked variation in plumage and mor- phology within the genus. We examined variation among 20 712 anonymous single nucleotide polymorphisms (SNPs) distributed throughout the redpoll genome in com- bination with 215 825 SNPs within the redpoll transcriptome, gene expression data and ecological niche modelling to evaluate genetic and ecological differentiation among currently recognized species. Expanding upon previous findings, we present evidence of (i) largely undifferentiated genomes among currently recognized species; (ii) substantial niche