Bird Monitoring Protocol for National Parks in the Sierra Nevada Network

Total Page:16

File Type:pdf, Size:1020Kb

Bird Monitoring Protocol for National Parks in the Sierra Nevada Network National Park Service U.S. Department of the Interior Natural Resource Program Center Bird Monitoring Protocol for National Parks in the Sierra Nevada Network Natural Resource Report NPS/SIEN/NRR—2010/231 ON THE COVER Top left, Ash-throated Flycatcher; top right, Canyon Wren; middle left, California Quail; middle right, Band-tailed Pigeon; bottom left, Yellow-rumped Warbler; bottom right, Lazuli Bunting,. Photos by Gary Lindquist. Bird Monitoring Protocol for National Parks in the Sierra Nevada Network Natural Resource Report NPS/SIEN/NRR—2010/231 Rodney B. Siegel, Ph.D. Robert L. Wilkerson The Institute for Bird Populations P.O. Box 1346 Point Reyes Station, California 94956-1346 (415) 663-1436 www.birdpop.org Meryl Goldin Rose Sierra Nevada Network, Inventory & Monitoring Program Yosemite Field Station P.O. Box 700 El Portal, California 95318 (209) 379-3268 http://science.nature.nps.gov/im/units/sien/index.cfm August 2010 U.S. Department of the Interior National Park Service Natural Resource Program Center Fort Collins, Colorado The National Park Service, Natural Resource Program Center publishes a range of reports that address natural resource topics of interest and applicability to a broad audience in the National Park Service and others in natural resource management, including scientists, conservation and environmental constituencies, and the public. The Natural Resource Report Series is used to disseminate high-priority, current natural resource management information with managerial application. The series targets a general, diverse audience, and may contain NPS policy considerations or address sensitive issues of management applicability. All manuscripts in the series receive the appropriate level of peer review to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and designed and published in a professional manner. This report received formal peer review by subject-matter experts who were not directly involved in the collection, analysis, or reporting of the data, and whose background and expertise put them on par technically and scientifically with the authors of the information. Views, statements, findings, conclusions, recommendations, and data in this report do not necessarily reflect views and policies of the National Park Service, U.S. Department of the Interior. Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the U.S. Government. This report is available from the Sierra Nevada I&M Network website (http://www.nature.nps.gov/im/units/sien) and the Natural Resource Publications Management website (http://www.nature.nps.gov/publications/NRPM). Please cite this publication as: Siegel, R. B., R. L. Wilkerson, and M. Goldin Rose. 2010. Bird monitoring protocol for national parks in the Sierra Nevada Network. Natural Resource Report NPS/SIEN/NRR—2010/231. National Park Service, Fort Collins, Colorado. NPS 963/105361, August 2010 ii Revision History Log Revision Date Author Changes Made Reason for Change 09/19/2007 All authors. 1st draft Development of protocol 11/26/2007 All authors. 2nd draft. Development of protocol 12/19/2007 All authors. 3rd draft. Development of protocol 03/22/2010 Mutch, McKinney, Make changes per Revisions based on comments Siegel, & Chung- reviewer comments from Agee & anonymous MacCoubrey reviewers. 05/19/2010 Chung-MacCoubrey Formatting/spelling In response to comments in errors were fixed. Conditional Approval letter Missing citations added. from Jim Agee (dated 4/12/10) iii Contents Page Figures............................................................................................................................................ ix Tables ............................................................................................................................................. xi Appendixes .................................................................................................................................. xiii Standard Operating Procedures (SOPs) .........................................................................................xv Acknowledgments....................................................................................................................... xvii Introduction ......................................................................................................................................1 Chapter 1: Background and Objectives .......................................................................................3 1.1. Background and History ............................................................................................... 3 1.2. Rationale for Monitoring Birds .................................................................................... 4 1.2.1. Importance and Value ........................................................................................... 4 1.2.2. Threats and Issues ................................................................................................. 4 1.3. Birds as Sensitive Indicators of Ecosystem Condition ............................................... 11 1.4. Relationship to Local, Regional, or National Monitoring Efforts .............................. 12 1.4.1. Sierra Nevada Bird Information and Other Vital Signs Monitoring ........................................................................................................................ 12 1.4.2. Regional and National Linkages ......................................................................... 12 1.5. Monitoring Questions and Measurable Objectives .................................................... 13 1.5.1. Bird Monitoring Protocol Objectives .................................................................. 13 1.5.2. Complementary Monitoring Programs ............................................................... 14 Chapter 2: Sampling Design ......................................................................................................17 2.1. Rationale for Selecting this Sampling Design over Others ........................................ 17 2.2. Large-park Sampling Scheme: Sequoia, Kings Canyon, and Yosemite National Parks ........................................................................................................................ 18 2.3. Site Selection in Large Parks ...................................................................................... 19 v 2.3.1. Procedures for Selecting Sampling Locations; Stratification, Spatial Design ................................................................................................................... 19 2.4. Sampling Frequency and Replication in Large Parks ................................................ 20 2.5. Recommended Number and Location of Sampling Units in Large Parks 22 2.6. Level of Detectable Change using Sample Design in Large Parks ............................ 24 2.7. Small-park Sampling Design: Devils Postpile National Monument .......................... 25 Chapter 3: Field Methods ..........................................................................................................27 3.1. Permitting and Compliance ........................................................................................ 27 3.2. Field season Preparations and Equipment Setup ........................................................ 27 3.3. Training and Sequence of Events during the Field Season ........................................ 27 3.4. Details of Taking Measurements in the Field ............................................................. 28 3.4.1. Sequoia, Kings Canyon, and Yosemite ................................................................ 28 3.4.2. Devils Postpile ..................................................................................................... 30 3.5. End-of-season Procedures .......................................................................................... 31 Chapter 4: Data Handling, Analysis, and Reporting .................................................................33 4.1. Project Information Management Overview .............................................................. 33 4.1.1. The Data Life Cycle ............................................................................................. 35 4.2. Pre-season Preparations for Information Management .............................................. 38 4.2.1. Set up Project Workspace ................................................................................... 38 4.2.2. GPS Loading and Preparation ............................................................................ 38 4.2.3. Implement Working Database Copy ................................................................... 38 4.3. Overview of Database Design .................................................................................... 38 4.4. Data Entry, Verification, Processing, and Validation ................................................ 39 4.4.1. Regular Data Backups ........................................................................................ 40 4.4.2. Data Verification and Metadata Development ................................................... 40 vi 4.4.3. GPS Data Procedures ......................................................................................... 40 4.4.4. Final Verification, Processing, and Validation .................................................. 41 4.5. Data Documentation and Certification
Recommended publications
  • Predation by Gray Catbird on Brown Thrasher Eggs
    March 2004 Notes 101 PREDATION BY GRAY CATBIRD ON BROWN THRASHER EGGS JAMES W. RIVERS* AND BRETT K. SANDERCOCK Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, Kansas State University, Manhattan, KS 66506 (JWR) Division of Biology, Kansas State University, Manhattan, KS 66506 (BKS) Present address of JWR: Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106 *Correspondent: [email protected] ABSTRACT The gray catbird (Dumetella carolinensis) has been documented visiting and breaking the eggs of arti®cial nests, but the implications of such observations are unclear because there is little cost in depredating an undefended nest. During the summer of 2001 at Konza Prairie Bio- logical Station, Kansas, we videotaped a gray catbird that broke and consumed at least 1 egg in a brown thrasher (Toxostoma rufum) nest. Our observation was consistent with egg predation because the catbird consumed the contents of the damaged egg after breaking it. The large difference in body mass suggests that a catbird (37 g) destroying eggs in a thrasher (69 g) nest might risk injury if caught in the act of predation and might explain why egg predation by catbirds has been poorly documented. Our observation indicated that the catbird should be considered as an egg predator of natural nests and that single-egg predation of songbird nests should not be attributed to egg removal by female brown-headed cowbirds (Molothrus ater) without additional evidence. RESUMEN El paÂjaro gato gris (Dumetella carolinensis) ha sido documentado visitando y rompien- do los huevos de nidos arti®ciales, pero las implicaciones de dichas observaciones no son claras porque hay poco costo por depredar un nido sin defensa.
    [Show full text]
  • Wildlife of the North Hills: Birds, Animals, Butterflies
    Wildlife of the North Hills: Birds, Animals, Butterflies Oakland, California 2005 About this Booklet The idea for this booklet grew out of a suggestion from Anne Seasons, President of the North Hills Phoenix Association, that I compile pictures of local birds in a form that could be made available to residents of the north hills. I expanded on that idea to include other local wildlife. For purposes of this booklet, the “North Hills” is defined as that area on the Berkeley/Oakland border bounded by Claremont Avenue on the north, Tunnel Road on the south, Grizzly Peak Blvd. on the east, and Domingo Avenue on the west. The species shown here are observed, heard or tracked with some regularity in this area. The lists are not a complete record of species found: more than 50 additional bird species have been observed here, smaller rodents were included without visual verification, and the compiler lacks the training to identify reptiles, bats or additional butterflies. We would like to include additional species: advice from local experts is welcome and will speed the process. A few of the species listed fall into the category of pests; but most - whether resident or visitor - are desirable additions to the neighborhood. We hope you will enjoy using this booklet to identify the wildlife you see around you. Kay Loughman November 2005 2 Contents Birds Turkey Vulture Bewick’s Wren Red-tailed Hawk Wrentit American Kestrel Ruby-crowned Kinglet California Quail American Robin Mourning Dove Hermit thrush Rock Pigeon Northern Mockingbird Band-tailed
    [Show full text]
  • Introduction
    INTRODUCTION UC-Stallcup TEXT.indd 1 1/23/14 11:30 AM This contribution to the California Natural History Guide Series of the University of California Press follows a long tradi- tion of books that explain, explore, and celebrate the natural riches of California and beyond. Our intent is to tell beginning birders, or curious naturalists, the how, what, when, where, and why of birding. Because birds are so mobile, some individuals of most spe- cies can wander far from their natal homes and appear any- where. Here we have tried to include only those species most likely to be seen along the coast, from Big Sur to the Oregon border. This is not a field guide to bird identification, but a field guide to the birds themselves. Birding is a word that encompasses many concepts. For some, the activity of searching for and observing birds is a clear window into the natural world, an affirmation of its beauty and its peacefulness. To others, birding is a delightful diversion from the hectic or perhaps boring daily routine of the mod- ern world— providing calm amid the chaos. Birds are nature’s ambassadors, connecting us through their ancient lineage to evolution’s astonishing creativity and offering us some guid- ance, through our study of their habitat needs, in our steward- ship of the Earth. Some people have found the wonders of birds to be the perfect antidote to sadness or loneliness, or a path to comradeship with kindred spirits; others consider the complex- ities of identification or behavior an intellectual challenge.
    [Show full text]
  • 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.
    [Show full text]
  • Artificial Water Catchments Influence Wildlife Distribution in the Mojave
    The Journal of Wildlife Management; DOI: 10.1002/jwmg.21654 Research Article Artificial Water Catchments Influence Wildlife Distribution in the Mojave Desert LINDSEY N. RICH,1,2 Department of Environmental Science, Policy, and Management, University of California- Berkeley, 130 Mulford Hall 3114, Berkeley, CA 94720, USA STEVEN R. BEISSINGER, Department of Environmental Science, Policy, and Management, University of California- Berkeley, 130 Mulford Hall 3114, Berkeley, CA 94720, USA JUSTIN S. BRASHARES, Department of Environmental Science, Policy, and Management, University of California- Berkeley, 130 Mulford Hall 3114, Berkeley, CA 94720, USA BRETT J. FURNAS, Wildlife Investigations Laboratory, California Department of Fish and Wildlife, Rancho Cordova, CA 95670, USA ABSTRACT Water often limits the distribution and productivity of wildlife in arid environments. Consequently, resource managers have constructed artificial water catchments (AWCs) in deserts of the southwestern United States, assuming that additional free water benefits wildlife. We tested this assumption by using data from acoustic and camera trap surveys to determine whether AWCs influenced the distributions of terrestrial mammals (>0.5 kg), birds, and bats in the Mojave Desert, California, USA. We sampled 200 sites in 2016–2017 using camera traps and acoustic recording units, 52 of which had AWCs. We identified detections to the species-level, and modeled occupancy for each of the 44 species of wildlife photographed or recorded. Artificial water catchments explained spatial variation in occupancy for 8 terrestrial mammals, 4 bats, and 18 bird species. Occupancy of 18 species was strongly and positively associated with AWCs, whereas 1 species (i.e., horned lark [Eremophila alpestris]) was negatively associated. Access to an AWC had a larger influence on species’ distributions than precipitation and slope and was nearly as influential as temperature.
    [Show full text]
  • Common Nighthawk Chordeiles Minor
    COSEWIC Assessment and Status Report on the Common Nighthawk Chordeiles minor in Canada SPECIAL CONCERN 2018 COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk. This report may be cited as follows: COSEWIC. 2018. COSEWIC assessment and status report on the Common Nighthawk Chordeiles minor in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. xi + 50 pp. (http://www.registrelep-sararegistry.gc.ca/default.asp?lang=en&n=24F7211B-1). Previous report(s): COSEWIC 2007. COSEWIC assessment and status report on the Common Nighthawk Chordeiles minor in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. xi + 25 pp. (www.sararegistry.gc.ca/status/status_e.cfm). Production note: COSEWIC would like to acknowledge Andrew Gregg Horn for writing the status report on Common Nighthawk, Chordeiles minor, prepared under contract with Environment and Climate Change Canada. This report was overseen and edited by Richard Elliot, Co-chair of the COSEWIC Birds Specialist Subcommittee. For additional copies contact: COSEWIC Secretariat c/o Canadian Wildlife Service Environment and Climate Change Canada Ottawa, ON K1A 0H3 Tel.: 819-938-4125 Fax: 819-938-3984 E-mail: [email protected] http://www.cosewic.gc.ca Également disponible en français sous le titre Ếvaluation et Rapport de situation du COSEPAC sur L’engoulevent d’Amérique (Chordeiles minor) au Canada. Cover illustration/photo: Common Nighthawk, copyright by Ronnie d'Entremont. Her Majesty the Queen in Right of Canada, 2018. Catalogue No. CW69-14/515-2018E-PDF ISBN 978-0-660-27850-6 COSEWIC Assessment Summary Assessment Summary – April 2018 Common name Common Nighthawk Scientific name Chordeiles minor Status Special Concern Reason for designation This aerial insectivore is a widespread breeding bird across southern and boreal Canada.
    [Show full text]
  • SICHUAN (Including Northern Yunnan)
    Temminck’s Tragopan (all photos by Dave Farrow unless indicated otherwise) SICHUAN (Including Northern Yunnan) 16/19 MAY – 7 JUNE 2018 LEADER: DAVE FARROW The Birdquest tour to Sichuan this year was a great success, with a slightly altered itinerary to usual due to the closure of Jiuzhaigou, and we enjoyed a very smooth and enjoyable trip around the spectacular and endemic-rich mountain and plateau landscapes of this striking province. Gamebirds featured strongly with 14 species seen, the highlights of them including a male Temminck’s Tragopan grazing in the gloom, Chinese Monal trotting across high pastures, White Eared and Blue Eared Pheasants, Lady Amherst’s and Golden Pheasants, Chinese Grouse and Tibetan Partridge. Next were the Parrotbills, with Three-toed, Great and Golden, Grey-hooded and Fulvous charming us, Laughingthrushes included Red-winged, Buffy, Barred, Snowy-cheeked and Plain, we saw more Leaf Warblers than we knew what to do with, and marvelled at the gorgeous colours of Sharpe’s, Pink-rumped, Vinaceous, Three-banded and Red-fronted Rosefinches, the exciting Przevalski’s Finch, the red pulse of Firethroats plus the unreal blue of Grandala. Our bird of the trip? Well, there was that Red Panda that we watched for ages! 1 BirdQuest Tour Report: Sichuan Including Northern Yunnan 2018 www.birdquest-tours.com Our tour began with a short extension in Yunnan, based in Lijiang city, with the purpose of finding some of the local specialities including the rare White-speckled Laughingthrush, which survives here in small numbers. Once our small group had arrived in the bustling city of Lijiang we began our birding in an area of hills that had clearly been totally cleared of forest in the fairly recent past, with a few trees standing above the hillsides of scrub.
    [Show full text]
  • A Mouse with a Beak
    LOCAL NATURE A Mouse with a Beak BY ERIC DINERSTEIN Contributing Writer sparrow-like klip-klip emanating from its per unit of weight, the Winter Wren delivers equally undistinguished short bill. If that’s its song with 10 times more power than a ILLUSTRATION BY TRUDY NICHOLSON all there was to the call, my account of this crowing rooster. Contributing Artist creature could pretty much stop here and move on to the next bird. Another fascinating fact about the Winter Wren is that until recently it had one of t frst glance, the diminutive But take a walk if you can in the northern the largest ranges of any bird, stretching Winter Wren is nothing to write forests in spring. Your ears would perk across the northern hemisphere. Now, home about. A plump lump of a bird up and you would become determined geneticists have split this species into three: Acovered in dull dark brown, barred plumage, to seek out the songster that is flling the a Pacifc Wren on the Western coast of this winter visitor is one of our smallest forest with the longest, one of the loudest, North America, the Winter Wren across North American bird species. And then and certainly the richest notes uttered by the rest of our continent, and the Eurasian there is that rather silly-looking short tail, any North American species. Tere on a Wren that ranges from Cornwall, England ofen held in the upright position, as if this branch, announcing, “this is my territory”, to Korea. Interestingly, Europe, Russia, and appendage got stuck in the manufacturing is the creature we nonchalantly pass over the rest of Asia have just this one species of process.
    [Show full text]
  • Luscinia Calliope (Siberian Rubythroat) European Red List of Birds Supplementary Material
    Luscinia calliope (Siberian Rubythroat) European Red List of Birds Supplementary Material The European Union (EU27) Red List assessments were based principally on the official data reported by EU Member States to the European Commission under Article 12 of the Birds Directive in 2013-14. For the European Red List assessments, similar data were sourced from BirdLife Partners and other collaborating experts in other European countries and territories. For more information, see BirdLife International (2015). Contents Reported national population sizes and trends p. 2 Trend maps of reported national population data p. 3 Sources of reported national population data p. 5 Species factsheet bibliography p. 6 Recommended citation BirdLife International (2015) European Red List of Birds. Luxembourg: Office for Official Publications of the European Communities. Further information http://www.birdlife.org/datazone/info/euroredlist http://www.birdlife.org/europe-and-central-asia/european-red-list-birds-0 http://www.iucnredlist.org/initiatives/europe http://ec.europa.eu/environment/nature/conservation/species/redlist/ Data requests and feedback To request access to these data in electronic format, provide new information, correct any errors or provide feedback, please email [email protected]. THE IUCN RED LIST OF THREATENED SPECIES™ BirdLife International (2015) European Red List of Birds Luscinia calliope (Siberian Rubythroat) Table 1. Reported national breeding population size and trends in Europe1. Country (or Population estimate Short-term population trend4 Long-term population trend4 Subspecific population (where relevant) 2 territory) Size (pairs)3 Europe (%) Year(s) Quality Direction5 Magnitude (%)6 Year(s) Quality Direction5 Magnitude (%)6 Year(s) Quality Russia 1,000-1,200 100 2000-2004 poor ? ? EU27 0 <1 n/a Europe 1,000-1,200 100 Unknown 1 See 'Sources' at end of factsheet, and for more details on individual EU Member State reports, see the Article 12 reporting portal at http://bd.eionet.europa.eu/article12/report.
    [Show full text]
  • The Song Structure of the Siberian Blue Robin Luscinia [Larvivora] Cyane and a Comparison with Related Species
    Ornithol Sci 16: 71 – 77 (2017) ORIGINAL ARTICLE The song structure of the Siberian Blue Robin Luscinia [Larvivora] cyane and a comparison with related species Vladimir IVANITSKII1,#, Alexandra IVLIEVA2, Sergey GASHKOV3 and Irina MAROVA1 1 Lomonosov Moscow State University, Biology, 119899 Moscow Leninskie Gory, Moscow, Moscow 119899, Russian Federation 2 M.F. Vladimirskii Moscow Regional Research Clinical Institute, Moscow, Moscow, Russian Federation 3 Tomsk State University-Zoology Museum, Tomsk, Tomsk, Russian Federation ORNITHOLOGICAL Abstract We studied the song syntax of the Siberian Blue Robin Luscinia cyane, a small insectivorous passerine of the taiga forests of Siberia and the Far East. Males SCIENCE have repertoires of 7 to 14 (mean 10.9±2.3) song types. A single song typically con- © The Ornithological Society sists of a short trill comprised of from three to six identical syllables, each of two to of Japan 2017 three notes; sometimes the trill is preceded by a short single note. The most complex songs contain as many as five or six different trills and single notes. The song of the Siberian Blue Robin most closely resembles that of the Indian Blue Robin L. brunnea. The individual repertoires of Siberian Blue Robin, Common Nightingale L. megarhynchos and Thrush Nightingale L. luscinia contain groups of mutually associ- ated song types that are sung usually one after another. The Siberian Blue Robin and the Common Nightingale perform them in a varying sequence, while Thrush Nightin- gale predominantly uses a fixed sequence of song types. The distinctions between the song syntax of Larvivora spp. and Luscinia spp. are discussed.
    [Show full text]
  • Mating System and Social Behavior of Rusty Blackbirds On
    MATING SYSTEM AND SOCIAL BEHAVIOR OF RUSTY BLACKBIRDS ON YUKON FLATS NATIONAL WILDLIFE REFUGE By April Harding Scurr A Thesis Presented to The Faculty of Humboldt State University In Partial Fulfillment of the Requirements for the Degree Master of Science in Natural Resources: Wildlife Committee Membership Dr. T. Luke George, Committee Chair Dr. Mark Colwell, Committee Member Dr. Susan Sharbaugh, Committee Member Dr. Rob Van Kirk, Graduate Coordinator May 2013 ABSTRACT THE MATING SYSTEM AND SOCIAL BEHAVIOR OF RUSTY BLACKBIRDS ON YUKON FLATS NATIONAL WILDLIFE REFUGE April Harding Scurr Many aspects of the breeding biology of the rapidly declining Rusty Blackbird (Euphagus carolinus) are unknown. I used behavioral observations and genetic analyses to gain a better understanding of their mating system, on Yukon Flats National Wildlife Refuge, Alaska, USA. Four polymorphic microsatellites developed for other avian species (QmAAT21, QmAAT37, Aph54, and Mp2-43) were used to assess rates of extra- pair paternity, polyandry, and egg dumping. Behavioral observations were employed to identify the social mating system and parental nest investment in relation to genetic contributions. In contrast to previous studies, my results indicate that male Rusty Blackbirds are not socially monogamous; over 15% of nests belonged to polygynous males. There was no evidence of polyandry or egg dumping, but extra-pair paternity (EPP) occurred in ≥ 33% of nests. There was no correlation between the proportion of young that a male sired in a nest and either feeding rate or nest defense. Further studies are needed to investigate the role of environmental and social factors on mating systems and the rates of polygamy and EPP in Rusty Blackbirds.
    [Show full text]
  • Automated Telemetry Reveals Staging Behavior in a Declining Migratory Passerine
    Volume 135, 2018, pp. 461–476 DOI: 10.1642/AUK-17-219.1 RESEARCH ARTICLE Automated telemetry reveals staging behavior in a declining migratory passerine James R. Wright,1* Luke L. Powell,2a and Christopher M. Tonra1 1 School of Environment and Natural Resources, The Ohio State University, Columbus, Ohio, USA 2 Migratory Bird Center, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, D.C., USA a Current address: Department of Biosciences, Durham University, Durham, United Kingdom * Corresponding author: [email protected] Submitted November 16, 2017; Accepted February 9, 2018; Published April 25, 2018 ABSTRACT Migratory birds spend most of their journeys at stopover sites where they rest and refuel. Many migrants are in steep decline, and understanding their behavior within and among migrations is crucial for developing effective conservation strategies across the full annual cycle. One of the most rapidly declining songbirds in North America is the Rusty Blackbird (Euphagus carolinus; 85–95% decline over the past 50 yr), and stopover ecology is a major gap in our knowledge of its annual cycle. We utilized an automated telemetry array in western Lake Erie and the Motus Wildlife Tracking System to track landscape-scale movements, stopover duration, departure behavior, and between-season site fidelity in this species. We found that stopover duration during both fall and spring was nearly 1 mo (mean¼25.5 days)—exceptionally long for a passerine. During spring, birds in both poor condition and high degree of molt had longer stopovers, post-departure flights were relatively long for a songbird, and tailwinds predicted departure in both seasons.
    [Show full text]