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To View the Apr/May Issue of the Sandpiper (Pdf)
The andpiper APRIL/MAY 2018 Redwood Region Audubon Society www.rras.org S APRIL/MAY FIELD TRIPS Every Saturday: Arcata Marsh and Wildlife Sanctuary. Sunday, April 8: Humboldt Bay National Wildlife carpooling available. Walks generally run 2-3 hours. All These are our famous, rain-or-shine, docent-led fi eld trips at Refuge. This is a wonderful 2-to 3-hour trip for people ages, abilities and interest levels welcome! For more the Marsh. Bring your binocular(s) and have a great morning wanting to learn the birds of the Humboldt Bay area. It information, please contact Melissa Dougherty at 530-859- birding! Meet in the parking lot at the end of South I Street takes a leisurely pace with emphasis on enjoying the birds! 1874 or email [email protected]. (Klopp Lake) in Arcata at 8:30 a.m. Trips end around 11 a.m. Beginners are more than welcome. Meet at the Refuge Walks led by: Cédric Duhalde (Apr 7); Cindy Moyer (Apr Visitor Center at 9 a.m. Call Jude Power (707-822- 3613) Saturday, April 14: Shorebird Workshop, Part 14); Michael Morris (Apr 21); Christine Keil (Apr 28). If you for more information. III at Del Norte Pier. Meet at 10 a.m. to watch the are interested in leading a Marsh walk, please contact Ken rising tide at the foot of W. Del Norte St. bring in waves Burton at [email protected]. Sunday, April 8: Shorebird Workshop, Part II of godwits, willets, turnstones, and curlews. Tide will turn at South Spit. First we’ll look for beach-loving around noon; we hope to see a good show by then. -
Elbroch Et Al 2017 Benefiting from Carrion Provided by Pumas
Biological Conservation 215 (2017) 123–131 Contents lists available at ScienceDirect Biological Conservation journal homepage: www.elsevier.com/locate/biocon Short communication Vertebrate diversity benefiting from carrion provided by pumas and other MARK subordinate, apex felids ⁎ L. Mark Elbroch , Connor O'Malley, Michelle Peziol, Howard B. Quigley Panthera, 8 West 40th Street, 18th Floor, New York, NY 10018, USA ARTICLE INFO ABSTRACT Keywords: Carrion promotes biodiversity and ecosystem stability, and large carnivores provide this resource throughout the Biodiversity year. In particular, apex felids subordinate to other carnivores contribute more carrion to ecological commu- Carnivores nities than other predators. We measured vertebrate scavenger diversity at puma (Puma concolor) kills in the Food webs Greater Yellowstone Ecosystem, and utilized a model-comparison approach to determine what variables influ- Scavenging enced scavenger diversity (Shannon's H) at carcasses. We documented the highest vertebrate scavenger diversity of any study to date (39 birds and mammals). Scavengers represented 10.9% of local birds and 28.3% of local mammals, emphasizing the diversity of food-web vectors supported by pumas, and the positive contributions of pumas and potentially other subordinate, apex felids to ecological stability. Scavenger diversity at carcasses was most influenced by the length of time the carcass was sampled, and the biological variables, temperature and prey weight. Nevertheless, diversity was relatively consistent across carcasses. We also identified six additional stalk- and-ambush carnivores weighing > 20 kg, that feed on prey larger than themselves, and are subordinate to other predators. Together with pumas, these seven felids may provide distinctive ecological functions through their disproportionate production of carrion and subsequent contributions to biodiversity. -
Darwin Initiative Action Plan for the Coastal Biodiversity of Anegada, British Virgin Islands
Darwin Initiative Action Plan for the Coastal Biodiversity of Anegada, British Virgin Islands Darwin Anegada BAP 2006 Page We dedicate this document to the people of Anegada; the stewards of Anegada’s biodiversity and to Raymond Walker of the BVI National Parks Trust who tragically died after a very short illness during the course of this project. This report should be cited as: McGowan A., A.C.Broderick, C.Clubbe, S.Gore, B.J.Godley, M.Hamilton, B.Lettsome, J.Smith-Abbott, N.K.Woodfield. 2006. Darwin Initiative Action Plan for the Coastal Biodiversity of Anegada, British Virgin Islands. 13 pp. Available online at: http://www.seaturtle.org/mtrg/projects/anegada/ Darwin Anegada BAP 2006 Page 2 1. Introduction It well known that Anegada has globally important biodiversity. Indeed, biodiversity is the basis for most livelihoods; supporting fisheries and leading to the attractiveness that is such a draw to visitors. Over the last three years (2003-2006), a project was undertaken on Anegada with a wide range of activities focussing towards this Biodiversity Action Plan. From the outset it was known that the island hosts a globally important coral reef system, regionally significant populations of marine turtles, is of regional importance to birds and supports globally important endemic plants. The project arose following the encouragement of Anegada community members and subsequent extensive consultation between Dr. Godley (University of Exeter) and heads of BVI Conservation and Fisheries Department (CFD) and BVI National Parks Trust (NPT) who requested that funding be sourced for a project which: 1. Allowed the coastal biodiversity of Anegada to be assessed; 2. -
The Journal of the Ontario Field Ornithologists Volume 13 Number 3 December 1995 Ontario Field Ornithologists
The Journal of the Ontario Field Ornithologists Volume 13 Number 3 December 1995 Ontario Field Ornithologists Ontario Field Ornithologists is an organization dedicated to the study of birdlife in Ontario. It was formed to unify the ever-growing numbers of field ornithologists (birders/birdwatchers) across the province and to provide a forum for the exchange of ideas and information among its members. The Ontario Field Ornithologists officially oversees the activities of the Ontario Bird Records Committee (OBRC), publishes a newsletter (OFO News) and a journal (Ontario Birds), hosts field trips throughout Ontario and holds an Annual General Meeting in the autumn. Current President: Jean Iron, 9 Lichen Place, Don Mills, Ontario M3A 1X3 (416) 445-9297 (e-mail: [email protected]). All persons interested in bird study, regardless of their level of expertise, are invited to become members of the Ontario Field Ornithologists. Membership rates can be obtained from the address below. All members receive Ontario Birds and OFO News. Please send membership inquiries to: Ontario Field Ornithologists, Box 62014, Burlington Mall Postal Outlet, Burlington, Ontario L7R 4K2. Ontario Birds Editors: Bill Crins, Ron Pittaway, Ron Tozer Editorial Assistance: Jean Iron, Nancy Checko Art Consultant: Chris Kerrigan Design/Production: Centennial Printers (Peterborough) Ltd. The aim of Ontario Birds is to provide a vehicle for documentation of the birds of Ontario. We encourage the submission of full length articles and short notes on the status, distribution, identification, and behaviour of birds in Ontario, as well as location guides to significant Ontario b!rdwatching areas, book reviews, and similar material of interest on Ontario birds. -
Rare Birds of California Now Available! Price $54.00 for WFO Members, $59.99 for Nonmembers
Volume 40, Number 3, 2009 The 33rd Report of the California Bird Records Committee: 2007 Records Daniel S. Singer and Scott B. Terrill .........................158 Distribution, Abundance, and Survival of Nesting American Dippers Near Juneau, Alaska Mary F. Willson, Grey W. Pendleton, and Katherine M. Hocker ........................................................191 Changes in the Winter Distribution of the Rough-legged Hawk in North America Edward R. Pandolfino and Kimberly Suedkamp Wells .....................................................210 Nesting Success of California Least Terns at the Guerrero Negro Saltworks, Baja California Sur, Mexico, 2005 Antonio Gutiérrez-Aguilar, Roberto Carmona, and Andrea Cuellar ..................................... 225 NOTES Sandwich Terns on Isla Rasa, Gulf of California, Mexico Enriqueta Velarde and Marisol Tordesillas ...............................230 Curve-billed Thrasher Reproductive Success after a Wet Winter in the Sonoran Desert of Arizona Carroll D. Littlefield ............234 First North American Records of the Rufous-tailed Robin (Luscinia sibilans) Lucas H. DeCicco, Steven C. Heinl, and David W. Sonneborn ........................................................237 Book Reviews Rich Hoyer and Alan Contreras ...........................242 Featured Photo: Juvenal Plumage of the Aztec Thrush Kurt A. Radamaker .................................................................247 Front cover photo by © Bob Lewis of Berkeley, California: Dusky Warbler (Phylloscopus fuscatus), Richmond, Contra Costa County, California, 9 October 2008, discovered by Emilie Strauss. Known in North America including Alaska from over 30 records, the Dusky is the Old World Warbler most frequent in western North America south of Alaska, with 13 records from California and 2 from Baja California. Back cover “Featured Photos” by © Kurt A. Radamaker of Fountain Hills, Arizona: Aztec Thrush (Ridgwayia pinicola), re- cently fledged juvenile, Mesa del Campanero, about 20 km west of Yecora, Sonora, Mexico, 1 September 2007. -
Arcata Marsh & Wildlife Sanctuary Bird Checklist
Arcata Marsh & Wildlife Sanctuary Bird Checklist Arcata, Humboldt County, California (Updated Fall 2014) The following list of 327 species was updated by Rob Fowler and David Fix in 2014 from the list they compiled in 2009. Data came from sightings entered in eBird; Stanley Harris's Northwest California Bird (2005, 1996, 1991); historical records in North American Birds magazine and its supporting unpublished Humboldt County summaries; the 2006 edition Arcata Marsh bird checklist (Elias Elias); the 1995 edition Arcata Marsh bird checklist (Kristina Van Wert); and personal communications with many birders. Formatting by Camden Bruner. Call the Northwest California Bird Alert at (707) 822-5666 to report or hear reports of rare birds! Abbreviations: A - Abundant; occurs in large numbers C - Common; likely to be found U - Uncommon; occurs in small numbers, found with seearching R - Rare; expected in very small numbers, not likely to be found Ca - Casual; several records, possibly may occur regularly Ac - Accidental; 1-3 records, not reasonably expected to occur Sp - Spring (Marsh - May) S - Summer (June to mid-July) F - Fall (mid-July through November) W - Winter (December through February) Here Waterfowl: Breeds Spring Summer Fall Winter _____ Greater White-fronted Goose R R R _____ Emperor Goose Ac _____ Snow Goose Ca Ca Ca _____ Ross's Goose Ca Ca Ca _____ Brant U Ac U R _____ Cackling Goose A U C _____ Canada Goose C C C C yes _____ Tundra Swan Ca Ca _____ Wood Duck U U U U yes _____ Gadwall C C C C yes _____ Eurasian Wigeon R U R _____ -
Birdlife International for the Input of Analyses, Technical Information, Advice, Ideas, Research Papers, Peer Review and Comment
UNEP/CMS/ScC16/Doc.10 Annex 2b CMS Scientific Council: Flyway Working Group Reviews Review 2: Review of Current Knowledge of Bird Flyways, Principal Knowledge Gaps and Conservation Priorities Compiled by: JEFF KIRBY Just Ecology Brookend House, Old Brookend, Berkeley, Gloucestershire, GL13 9SQ, U.K. June 2010 Acknowledgements I am grateful to colleagues at BirdLife International for the input of analyses, technical information, advice, ideas, research papers, peer review and comment. Thus, I extend my gratitude to my lead contact at the BirdLife Secretariat, Ali Stattersfield, and to Tris Allinson, Jonathan Barnard, Stuart Butchart, John Croxall, Mike Evans, Lincoln Fishpool, Richard Grimmett, Vicky Jones and Ian May. In addition, John Sherwell worked enthusiastically and efficiently to provide many key publications, at short notice, and I’m grateful to him for that. I also thank the authors of, and contributors to, Kirby et al. (2008) which was a major review of the status of migratory bird species and which laid the foundations for this work. Borja Heredia, from CMS, and Taej Mundkur, from Wetlands International, also provided much helpful advice and assistance, and were instrumental in steering the work. I wish to thank Tim Jones as well (the compiler of a parallel review of CMS instruments) for his advice, comment and technical inputs; and also Simon Delany of Wetlands International. Various members of the CMS Flyway Working Group, and other representatives from CMS, BirdLife and Wetlands International networks, responded to requests for advice and comment and for this I wish to thank: Olivier Biber, Joost Brouwer, Nicola Crockford, Carlo C. Custodio, Tim Dodman, Roger Jaensch, Jelena Kralj, Angus Middleton, Narelle Montgomery, Cristina Morales, Paul Kariuki Ndang'ang'a, Paul O’Neill, Herb Raffaele and David Stroud. -
Belize), and Distribution in Yucatan
University of Neuchâtel, Switzerland Institut of Zoology Ecology of the Black Catbird, Melanoptila glabrirostris, at Shipstern Nature Reserve (Belize), and distribution in Yucatan. J.Laesser Annick Morgenthaler May 2003 Master thesis supervised by Prof. Claude Mermod and Dr. Louis-Félix Bersier CONTENTS INTRODUCTION 1. Aim and description of the study 2. Geographic setting 2.1. Yucatan peninsula 2.2. Belize 2.3. Shipstern Nature Reserve 2.3.1. History and previous studies 2.3.2. Climate 2.3.3. Geology and soils 2.3.4. Vegetation 2.3.5. Fauna 3. The Black Catbird 3.1. Taxonomy 3.2. Description 3.3. Breeding 3.4. Ecology and biology 3.5. Distribution and threats 3.6. Current protection measures FIRST PART: BIOLOGY, HABITAT AND DENSITY AT SHIPSTERN 4. Materials and methods 4.1. Census 4.1.1. Territory mapping 4.1.2. Transect point-count 4.2. Sizing and ringing 4.3. Nest survey (from hide) 5. Results 5.1. Biology 5.1.1. Morphometry 5.1.2. Nesting 5.1.3. Diet 5.1.4. Competition and predation 5.2. Habitat use and population density 5.2.1. Population density 5.2.2. Habitat use 5.2.3. Banded individuals monitoring 5.2.4. Distribution through the Reserve 6. Discussion 6.1. Biology 6.2. Habitat use and population density SECOND PART: DISTRIBUTION AND HABITATS THROUGHOUT THE RANGE 7. Materials and methods 7.1. Data collection 7.2. Visit to others sites 8. Results 8.1. Data compilation 8.2. Visited places 8.2.1. Corozalito (south of Shipstern lagoon) 8.2.2. -
90 Records of the “Western Flycatcher” in Florida, With
Florida Field Naturalist 48(3):90–98, 2020. RECORDS OF THE “WESTERN FLYCATCHER” IN FLORIDA, WITH EMPHASIS ON A VOCAL INDIVIDUAL THAT UTTERED CALL-NOTES CONSISTENT WITH PACIFIC-SLOPE FLYCATCHER (Empidonax difficilis) BILL PRANTY,1 DONALD FRASER,2 AND VALERI PONZO3 18515 Village Mill Row, Bayonet Point, Florida 34667-2662 Email: [email protected] 22181 Gulf View Boulevard, Dunedin, Florida 34698 Email: [email protected] 3725 Center Road, Sarasota, Florida 34240 Email: [email protected] In 1989, members of the American Ornithologists’ Union Check-list Committee (American Ornithologists’ Union 1989) agreed that the Western Flycatcher (Empidonax difficilis) complex consisted of two species: the Pacific-slope Flycatcher E.( difficilis) and the Cordilleran Flycatcher (E. occidentalis). These former subspecies were elevated to species status based on Johnson (1980) and Johnson and Marten (1988), who reported on apparent genetic and vocal differences and assortative pairing. However, Johnson (1980, 1994) found a mixed population breeding in northern California, and Rush et al. (2009) found hybridization and introgression in southwestern Canada. These discoveries have led some ornithologists to suggest that the two taxa should not have been elevated to separate species. Outside of the hybrid zones, however, Pacific-slope Flycatchers and Cordilleran Flycatchers maintain separate populations, with consistent genetic and vocal differences (Rush et al. 2009). The “Western Flycatcher” was not known to occur in Florida until recently (Robertson and Woolfenden 1992, Stevenson and Anderson 1994, Greenlaw et al. 2014). Pranty (1996) cited a probable report at Gulf Breeze, Santa Rosa County, Florida, on 28 December 1995 by Bob, Lucy, and Scot Duncan. The first verifiable record was thought to have been discovered in 2015, but an earlier, unpublished record, dating to 2004, was posted to eBird ten years later. -
Spring Migration of Blackpoll Warblers Across North America
VOLUME 15, ISSUE 1, ARTICLE 17 Covino, K. M., S. R. Morris, M. Shieldcastle, and P. D. Taylor. 2020. Spring migration of Blackpoll Warblers across North America. Avian Conservation and Ecology 15(1):17. https://doi.org/10.5751/ACE-01577-150117 Copyright © 2020 by the author(s). Published here under license by the Resilience Alliance. Research Paper Spring migration of Blackpoll Warblers across North America Kristen M. Covino 1,2,3,4, Sara R. Morris 2,3,4,5, Mark Shieldcastle 6 and Philip D. Taylor 7 1Biology Department, Loyola Marymount University, Los Angeles, California, USA, 2Appledore Island Migration Station, Portsmouth, New Hampshire, USA, 3Shoals Marine Laboratory, University of New Hampshire, Durham, New Hampshire, USA, 4Braddock Bay Bird Observatory, Hilton, New York, USA, 5Canisius College, Buffalo, New York, USA, 6Black Swamp Bird Observatory, Oak Harbor, Ohio, USA, 7Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada ABSTRACT. The awe-inspiring seasonal migrations of birds between breeding and wintering grounds has long attracted the interest of casual naturalists and professional ornithologists alike. Although new technologies improve our ability to follow individual migrants throughout their annual cycle, the scale and detail provided by banding records remain incredibly valuable. The focus of avian migration studies is often the most physiologically challenging migratory feats that sometimes leaves certain species or seasons relatively understudied. The Blackpoll Warbler (Setophaga striata) is well-known for its transoceanic migratory flight during fall migration, the season in which it is best studied, yet the details of its spring migration are not well known, at least not at a continental scale. -
Birds of the East Texas Baptist University Campus with Birds Observed Off-Campus During BIOL3400 Field Course
Birds of the East Texas Baptist University Campus with birds observed off-campus during BIOL3400 Field course Photo Credit: Talton Cooper Species Descriptions and Photos by students of BIOL3400 Edited by Troy A. Ladine Photo Credit: Kenneth Anding Links to Tables, Figures, and Species accounts for birds observed during May-term course or winter bird counts. Figure 1. Location of Environmental Studies Area Table. 1. Number of species and number of days observing birds during the field course from 2005 to 2016 and annual statistics. Table 2. Compilation of species observed during May 2005 - 2016 on campus and off-campus. Table 3. Number of days, by year, species have been observed on the campus of ETBU. Table 4. Number of days, by year, species have been observed during the off-campus trips. Table 5. Number of days, by year, species have been observed during a winter count of birds on the Environmental Studies Area of ETBU. Table 6. Species observed from 1 September to 1 October 2009 on the Environmental Studies Area of ETBU. Alphabetical Listing of Birds with authors of accounts and photographers . A Acadian Flycatcher B Anhinga B Belted Kingfisher Alder Flycatcher Bald Eagle Travis W. Sammons American Bittern Shane Kelehan Bewick's Wren Lynlea Hansen Rusty Collier Black Phoebe American Coot Leslie Fletcher Black-throated Blue Warbler Jordan Bartlett Jovana Nieto Jacob Stone American Crow Baltimore Oriole Black Vulture Zane Gruznina Pete Fitzsimmons Jeremy Alexander Darius Roberts George Plumlee Blair Brown Rachel Hastie Janae Wineland Brent Lewis American Goldfinch Barn Swallow Keely Schlabs Kathleen Santanello Katy Gifford Black-and-white Warbler Matthew Armendarez Jordan Brewer Sheridan A. -
BIRD CONSERVATION the Magazine of American Bird Conservancy Fall 2012 BIRD’S EYE VIEW
BIRD CONSERVATION The Magazine of American Bird Conservancy Fall 2012 BIRD’S EYE VIEW Is Species Conservation Enough? How should we as conservationists decide which birds deserve protection? Where should we draw the line that tells us which groups of birds are “unique” enough to merit saving? t one extreme, a conserva- becomes extinct? Do we care about tion skeptic might insist that the continuation of these evolution- Apreserving one type of bird ary processes, or do we take a pass from each genus is sufficient. At the on preserving them because these other, passionate lovers of wildlife birds are not sufficiently “unique”? may not accept the loss of even one When in doubt about whether to individual. A more typical birder take conservation action, I fall back might nominate the species as the on the precautionary principle, key conservation level because the which says, in essence, that when concept of species is familiar to us. l American Dipper: USFWS uncertain about the potential harm- Science gets us closer to the answers, ful effect of an action, the prudent but it cannot draw the line: the purpose of science is course is the conservative one. or, as aldo Leopold to gather knowledge, not to make decisions for us. wrote, “Save all of the pieces.” Furthermore, like life itself, the science of taxonomy is I say, save the Black Hills Dipper regardless of which in a constant state of change. Baltimore and Bullock’s taxonomic opinion prevails; and while we are at it, we Orioles have been “lumped” into Northern Oriole and ought to save Wayne’s Warbler, the rhododendron- then “split” again, all based on the most current scien- dwelling Swainson’s Warbler, and the tree-nesting tific opinion.