DOCSLIB.ORG

Demography of Sooty Fox Sparrows Following a Shift from a Migratory to Resident Life History

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Canadian Journal of Zoology Demography of sooty fox sparrows following a shift from a migratory to resident life history Journal: Canadian Journal of Zoology Manuscript ID cjz-2017-0102.R2 Manuscript Type: Article Date Submitted by the Author: 08-Oct-2017 Complete List of Authors: Visty, Hannah; University of British Columbia, Forest and Conservation Sciences Wilson, Scott; Environment and Climate Change Canada, National Wildlife Research CentreDraft Germain, Ryan; University of British Columbia, Forest and Conservation Science; University of Aberdeen, Institute of Biological and Environmental Sciences Krippel, Jessica; University of British Columbia, Forest and Conservation Science Arcese, Peter; Univ of British Columba, sooty fox sparrow, demography, population growth, MIGRATION < Keyword: Discipline, colonization, Passerella unalaschcensis https://mc06.manuscriptcentral.com/cjz-pubs Page 1 of 20 Canadian Journal of Zoology 1 Demography of sooty fox sparrows following a shift from a migratory to resident life history Hannah Visty1, Scott Wilson2, Ryan Germain1,3, Jessica Krippel1, and Peter Arcese1 1Department of Forest and Conservation Sciences, 2424 Main Mall, Vancouver, BC V6T 1Z4; [email protected]; [email protected]; [email protected] 2Environment and Climate Change Canada, National Wildlife Research Centre, 1125 Colonel by Drive, Ottawa, ON K1A 0H3; [email protected] 3Institute of Biological and Environmental Sciences, Zoology Building, University of Aberdeen, Tillydrone Avenue, Aberdeen, AB24 2TZ, United Kingdom; [email protected] Draft Contact author: Hannah Visty, Department of Forest and Conservation Sciences, 2424 Main Mall, Vancouver, BC V6T 1Z4; [email protected]; Phone: 778-985-6200; Fax: 8229103 https://mc06.manuscriptcentral.com/cjz-pubs Canadian Journal of Zoology Page 2 of 20 2 Demography of sooty fox sparrows following a shift from a migratory to resident life history Hannah Visty (H. Visty), Scott Wilson (S. Wilson), Ryan Germain (R. Germain), Jessica Krippel (J. Krippel), and Peter Arcese (P. Arcese) Abstract Identifying causes and consequences of variation in species life history has the potential to improve predictions about how climate and land use change may affect the demography and distribution of species in future. Sooty fox sparrows (Passerella unalaschcensis J.F. Gmelin, 1789; or commonly grouped within Passerella iliaca B. Merrem, 1786) were migrants that rarely bred in the Georgia Basin of British Columbia prior to ~1950 but have since established resident populations. Data on 270 color-banded birdsDraft and 54 nests on Mandarte Is., BC, allowed us to estimate demographic vital rates and population growth in one recently established population. Annual fecundity (F), estimated as the product of the number of broods initiated (1.5 ± 0.01; mean ± sd), clutch size (2.82 ± 0.44), and probability of survival to fledging (0.68 ± 0.02), exceeded values reported for migrants, supporting the hypothesis that residents invest more in reproduction on average than migrants within species. Estimating juvenile and adult overwinter survival (Sj = 0.32 ± 0.06, and Sa = 0.69 ± 0.05) next allowed us to simulate an expected distribution of population growth rates as: λexp = Sa + (Sj × F), given parameter error. Our estimate of λexp (1.61 ± 0.57) implies expeditious population growth, consistent with the species’ recent colonization of the region. Keywords: sooty fox sparrow, Passerella unalaschcensis, demography, population growth, migration, colonization https://mc06.manuscriptcentral.com/cjz-pubs Page 3 of 20 Canadian Journal of Zoology 3 Introduction Climate, land cover and species life histories often co-vary (e.g., Hudson and Keatley 2010; Gimona et al. 2015), which suggests that by identifying causal mechanisms we can improve predictions about how environmental change may affect species life histories in future (e.g., Winkler et al. 2002; Visser 2008; Pacifici et al. 2015; Beever et al. 2017). Fox sparrows (Passerella iliaca B. Merrem, 1786) offer an interesting case in point, given the species’ current status as a polytypic, single-brooded migrant (Bendire 1889; Swarth 1920; Threlfall and Blacquiere 1982; Garrett et al. 2000; Weckstein et al. 2002). In contrast, Zink (1994) provided genetic evidence in support of a phylogenetically distinct sooty fox sparrow (Passerella unalaschcensis J.F. Gmelin, 1789; sometimes recognized as a subspecies group within P. iliaca, e.g., Chesser et al. 2016) in coastal regionsDraft of the Pacific Northwest, and Wahl et al. (2005) reported that sooty fox sparrows have become residents of the coastal lowlands and Gulf and San Juan Islands of British Columbia (BC) and Washington State (WA), possibly producing multiple broods annually. We ask in this paper whether these differences in historical and modern accounts of sooty fox sparrows represent a life history shift from a migratory to residential lifestyle, similar to shifts reported in a variety of species as an example of acclimatization to environmental change (e.g., Winkler et al. 2002; Visser 2008; Beever et al. 2017). Historical records prior to ~1950 indicate that sooty fox sparrows were short distance migrants in coastal British Columbia, with only three breeding records from western Vancouver Island (Swarth 1920; Munro and Cowan 1947). By 1983, Guiguet (1983) listed sooty fox sparrows as resident on Vancouver Island, and other sources recognize them as residents of the Southern Gulf and San Juan Islands (Baron and Acorn 1997; Campbell et al. 2001; Wahl et al. 2005). Multiple lines of evidence also indicate that sooty fox sparrows are increasing in this https://mc06.manuscriptcentral.com/cjz-pubs Canadian Journal of Zoology Page 4 of 20 4 region (National Audubon Society 2010; Hearne 2015), as might be expected following successful colonization and the adoption of a residential lifestyle. This expectation arises from well-known trade-offs in migratory and reproductive tactics, which influence species demography, ecology and evolution (Rolshausen et al. 2009; Tökölyi and Barta 2011). Shifts from migratory to residential lifestyles have been linked to increases in reproductive effort (Gillis et al. 2008; Bruderer and Salewski 2009). Comparative studies of birds also showed that short- distant migrant birds bred longer and initiated more broods with smaller clutches than long distance migrants of the same species (Sandercock and Jaramillo 2002). In this paper we estimate demographic vital rates and population growth in a resident, individually-marked population of sooty fox sparrows that colonized Mandarte Island, BC, in 1975. Based on the studies above, we expectedDraft to observe that the sooty fox sparrows we studied would have longer breeding seasons, initiate more nests annually, and lay smaller clutches than observed in migratory fox sparrows. In the absence of commensurate reductions in survival (e.g., Sandercock and Jaramillo 2002), we also expected to observe evidence of positive population growth. Methods We studied sooty fox sparrows on Mandarte Is. (c. 6 ha), located ~11km south of Victoria International Airport in southwestern BC, Canada, also the site of a long-term study of song sparrows (Melospiza melodia; 1960-63 and 1975-2017, Tompa 1963; Arcese et al. 1992; Smith et al. 2006). Sooty fox sparrows colonized Mandarte Is. in 1975 and became the most common passerine on the island ~2010 (Tompa 1963; Drent et al. 1964; Johnson 2015). We began collecting demographic data on sooty fox sparrows opportunistically in 2010 while also monitoring song sparrows. Observations typically spanned March – August annually, including https://mc06.manuscriptcentral.com/cjz-pubs Page 5 of 20 Canadian Journal of Zoology 5 5-20 days per year of netting and census during overwinter trips in 2012 – 14, and up to 60 days per winter from 1982 – 1987, indicating that most or all sooty fox sparrows observed on the island were resident year-round. From 2010 – 2016, 123 nestling, 82 juvenile, and 65 adult sooty fox sparrows were fitted with a numbered metal and 1-3 coloured plastic bands to facilitate re- sighting. A smaller number of distinctly marked fox sparrows (1989; or ‘naturally’ identifiable by a unique distribution of white feathers from 1982 – 1987) originally confirmed year-round residence in this population, but were not observed in sufficient detail to use in analyses presented here. We thus used birds marked from 2010 – 2016 to estimate juvenile annual survival (Sj) and adult annual survival (Sa) using recapture and re-sighting data and program MARK (version 8.x). When doing so, individuals bandedDraft outside the formal re-sighting period (May 1 –June 30) in year t to t+1 were entered into the survival encounter history as if they were observed in the re-sighting period in year t+1. ‘Juveniles’ include birds banded as nestlings (~4-8 days-old), fledglings (~12-24 days-old), or independent young (<76 days-old). Our initial analyses indicated no difference in overwinter survival estimates whether nestlings and older young were treated separately or pooled; we therefore pooled these groups to increase sample size and simplify our population model by estimating survival for single period (nestling to recruit: ‘juvenile survival’). Candidate models were developed using combinations of the most common determinants of survival (age in two classes: juvenile or adult, variation by year of observation, or simply held constant); the ‘logit’ link function was used to test all models. Model goodness-
Recommended publications
  • Birds on San Clemente Island, As Part of Our Work Toward the Recovery of the Island’S Endangered Species

    Birds on San Clemente Island, As Part of Our Work Toward the Recovery of the Island’S Endangered Species

    WESTERN BIRDS Volume 36, Number 3, 2005 THE BIRDS OF SAN CLEMENTE ISLAND BRIAN L. SULLIVAN, PRBO Conservation Science, 4990 Shoreline Hwy., Stinson Beach, California 94970-9701 (current address: Cornell Laboratory of Ornithology, 159 Sapsucker Woods Rd., Ithaca, New York 14850) ERIC L. KERSHNER, Institute for Wildlife Studies, 2515 Camino del Rio South, Suite 334, San Diego, California 92108 With contributing authors JONATHAN J. DUNN, ROBB S. A. KALER, SUELLEN LYNN, NICOLE M. MUNKWITZ, and JONATHAN H. PLISSNER ABSTRACT: From 1992 to 2004, we observed birds on San Clemente Island, as part of our work toward the recovery of the island’s endangered species. We increased the island’s bird list to 317 species, by recording many additional vagrants and seabirds. The list includes 20 regular extant breeding species, 6 species extirpated as breeders, 5 nonnative introduced species, and 9 sporadic or newly colonizing breeding species. For decades San Clemente Island had been ravaged by overgrazing, especially by goats, which were removed completely in 1993. Since then, the island’s vegetation has begun recovering, and the island’s avifauna will likely change again as a result. We document here the status of that avifauna during this transitional period of re- growth, between the island’s being largely denuded of vegetation and a more natural state. It is still too early to evaluate the effects of the vegetation’s still partial recovery on birds, but the beginnings of recovery may have enabled the recent colonization of small numbers of Grasshopper Sparrows and Lazuli Buntings. Sponsored by the U. S. Navy, efforts to restore the island’s endangered species continue—among birds these are the Loggerhead Shrike and Sage Sparrow.
  • Determining Breeding Areas and Migration Routes of Coastal

    Determining Breeding Areas and Migration Routes of Coastal

    Determining Breeding Areas and Migration Routes of Coastal Northwest Sooty Fox Sparrows (Passerella iliaca unalaschcensis ) Over-Wintering on Vancouver Island using Geolocators Summary The phylogeography of the Fox Sparrow ( Passerella iliaca ) has been much debated, but birds breeding along the west coast of North America are generally considered to be a separate species ( Passerella iliaca unalaschecensis ) based on mitochondrial DNA. Using plumage characteristics, a further seven sub- species have been identified within this group. These subspecies, and their migration patterns, have become an emblematic example of leap-frog migration, based upon the early work of Swarth (1920). However, more recently, these connectivity patterns have been called into question, partly based on the relative difficulty in accurately distinguishing plumages and subspecies in the field. Light-level geolcators are now small enough to be carried by <50 g songbirds and can reveal remarkable new insights into migration patterns and behaviour. Using geolocators, we will track a population of Fox Sparrows overwintering on southern Vancouver Island to their breeding areas. The objectives of this study are two-fold: 1) Based on leapfrog patterns identified by Swarth (1920) we will use direct-tracking methods to test the hypothesis that birds overwintering on Vancouver Island breed on the island and do not mix with birds along the northwest coast (i.e. strong connectivity) and 2) Identify connections between overwintering and breeding areas that are important to conservation and management of Fox Sparrow populations. Personnel • Project Leader: Michael Simmons, Rocky Point Bird Observatory (RPBO) • Migration Research Advisor: Dr. Bridget Stutchbury, York University • Science and Geolocator Technical Advisor and Data Analyst: Dr.
  • Fourteenth Supplement to the American Ornithologists' Union Check-List of North American Birds

    Fourteenth Supplement to the American Ornithologists' Union Check-List of North American Birds

    "^"iqS^'^] Fourteenth SuppkmeiU to the A. 0. U. Check-List. 343 FOURTEENTH SUPPLEMENT TO THE AMERICAN ORNITHOLOGISTS' UNION CHECK-LIST OF NORTH AMERICAN BIRDS. The Thirteenth Supplement to the Check-List was issued in July, 1904 (Auk, XXI, pp. 41 1-424). ^ Since this date the Com- mittee has held six sessions, all except one in Washington, at the following dates : April 21-25, 1905; January 17-20, 1906; Novem- ber 16-17, 1906; April 18-23, 1907; December 12, 1907 (at Phila- delphia); April 15-20, 1908. In view of the probable early appearance of a third edition of the Check-List, authorized by the Union at the Stated ^Meeting held in November, 1906, it seemed best to the Committee to withhold its reports from publication till the results of its work should appear in the new Check-List. Now that the manuscript for the new edition is practically completed, it seems desirable that the Com- mittee should, in accordance with precedent, give reasons for the changes it has instituted during the last four years, since these cannot be readily indicated in the Check-List. Its decisions involve, as usual, additions to and eliminations from the Check- List, changes in nomenclature and in the status of groups, and the rejection of many proposed additions, and changes in nomenclature and status. The Committee has aimed to secure as stable a foundation, as possible for the new Check-List, anticipating a few changes in names that would soon surely arise, as well as those already pro- posed. Nearly all of the nomenclature changes here recorded are due to the strict enforcement of the laAv of priority, and result from the recent bibliographic work of a large number of investi- gators, abroad as well as in America.
  • Migration of Birds Circular 16

    Migration of Birds Circular 16

    U.S. Fish and Wildlife Service Migration of Birds Circular 16 Migration of Birds Circular 16 by Frederick C. Lincoln, 1935 revised by Steven R. Peterson, 1979 revised by John L. Zimmerman, 1998 Division of Biology, Kansas State University, Manhattan, KS Associate editor Peter A. Anatasi Illustrated by Bob Hines U.S. FISH & WILDLIFE SERVICE D E R P O A I R R E T T M N EN I T OF THE U.S. Department of the Interior U.S. Fish and Wildlife Service TABLE OF CONTENTS Page PREFACE..............................................................................................................1 INTRODUCTION ................................................................................................2 EARLY IDEAS ABOUT MIGRATION............................................................4 TECHNIQUES FOR STUDYING MIGRATION..........................................6 Direct Observation ....................................................................................6 Aural ............................................................................................................7 Preserved Specimens ................................................................................7 Marking ......................................................................................................7 Radio Tracking ..........................................................................................8 Radar Observation ....................................................................................9 EVOLUTION OF MIGRATION......................................................................10
  • DEMOGRAPHIC SHIFTS and the ROLE of CLIMATE WARMING in a SWITCH from MIGRANT to RESIDENT LIFE HISTORY By

    DEMOGRAPHIC SHIFTS and the ROLE of CLIMATE WARMING in a SWITCH from MIGRANT to RESIDENT LIFE HISTORY By

    DEMOGRAPHIC SHIFTS AND THE ROLE OF CLIMATE WARMING IN A SWITCH FROM MIGRANT TO RESIDENT LIFE HISTORY by Hannah Visty B.Sc., The University of British Columbia, 2015 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Forestry) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) November 2018 © Hannah Visty, 2018 The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, a thesis/dissertation entitled: Demographic shifts and the role of climate warming in a switch from migrant to resident life history submitted by Hannah Visty in partial fulfillment of the requirements for the degree of Master of Science in Forestry Examining Committee: Dr. Peter Arcese, Forestry Supervisor Dr. Kathy Martin, Forestry Supervisory Committee Member Dr. Andrew Trites, Zoology Additional Examiner Additional Supervisory Committee Members: Dr. Scott Wilson, Environment Canada Supervisory Committee Member ii Abstract Identifying causes and consequences of variation in species life history should improve predictions about how climate and land use change will affect the demography and distribution of species in future. Sooty fox sparrows (Passerella iliaca unalaschcensis) were documented as obligate migrants, abundant in winter but with only three breeding records in coastal habitats of British Columbia and Washington prior to 1950. Because this subspecies has since established year-round resident populations in this region, I studied resident populations of sooty fox sparrows to test theory on how climate change and life history might affect the demography and distribution of a new partial migrant.
  • News, Notes, Comments

    News, Notes, Comments

    News, Notes, Comments MANY FIELD BIOLOGIST INTERNS are needed ing on location),and housingprovided. For further to operate constanteffort mist-nettingand band- informationand application materials, interested ing(MAPS) stations in Washington,Oregon, Cali- persons should contact fornia,Texas, Kansas, Missouri, Indiana, Kentucky, Maryland,Virginia, and NorthCarolina. Internships Eric Feuss, begin21 April, 23 April or I May and end 8 Au- The Institute for Bird Populations gust, dependingon location.Applicants should P.O. Box 1346 havesubstantial birding experience; internships in- Point Reyes Station, CA 94956 cludean intensive,two-week training course in the (415-663-1436; FAX 415-663-9482, above-mentionedmonitoring techniques. Appli- e:mail IBPSTAFF(•COMPUSERVE.COM) cants with good field vehicles are especially needed.A per diemreimbursement, ranging from Please pass thisannouncement on to anyonewho approximately$438 to $617 per month(depend- might be interestedin such a position. Books A Guideto the Identificationand NaturalHistory Jamaicaor somesuch place. Sparrows as a group, of the Sparrows of the United States and Canada. however,present two majorproblems: many species J. Rising.1996. Academic Press, New York. 365 pp., are hardto observe,and mostare dulland primarily including27 colorplates. $39.95 U.S. (hardcover), brown,making identification a pain, compared to their $19.95 U.S. (paperback). more brightlycolored and visible relatives. When I was a graduatestudent, another birder once Thesetwo problemswould be reducedwith a good askedme what I was studyingfor my dissertation. fieldguide to the sparrowsand theirallies. This must "Sparrows,"was my answer. The birder looked at be the goldenage for sparrow-lovers,because no me quizzicallyfor a moment,then responded, "Well, less than three bookscovering the identificationof I guesssomebody has to studythem." sparrows, finches and their relatives have been publishedin the pastfew years,including those by Thefact that we weresurrounded by the colorfuland Clements et al.
  • The Vertebrates of British Columbia: Scientific and English Names

    The Vertebrates of British Columbia: Scientific and English Names

    The Vertebrates of British Columbia: Scientific and English Names Standards for Components of British Columbia's Biodiversity No. 2 Prepared by Ministry of Sustainable Resource Management Terrestrial Information Branch for the Terrestrial Ecosystems Task Force Resources Inventory Committee Year 2002 Version 3.0 © The Province of British Columbia Published by the Resources Inventory Committee National Library of Canada Cataloguing in Publication Data Main entry under title: The vertebrates of British Columbia [electronic resource] -- Version 3.0 (Standards for components of British Columbia’s biodiversity ; no. 2) Previously issued by Ministry of Environment, Lands and Parks, Resources Inventory Branch. Issued also in printed format on demand. Available through the Internet. Includes bibliographical references: p. ISBN 0-7726-4687-2 1. Vertebrates - British Columbia - Nomenclature. 2. Vertebrates - Nomenclature. I. British Columbia. Ministry of Sustainable Resource Management. Terrestrial Information Branch. II. Resources Inventory Committee (Canada). Terrestrial Ecosystems Task Force. III. British Columbia. Ministry of Environment, Lands and Parks. Resources Inventory Branch. IV. Series. QL606.52.C3V47 2002 596'.09711 C2002-960000-6 Additional Copies of this publication can be purchased from: Government Publication Services Phone: (250) 387-6409 or Toll free: 1-800-663-6105 Fax: (250) 387-1120 www.publications.gov.bc.ca Digital Copies are available on the Internet at: http://www.for.gov.bc.ca/ric ii Preface This version of The Vertebrates of British Columbia: Scientific and Common Names contains current lists as of September 2001 of the scientific and common names for the vertebrates of British Columbia, as well as scientific names for subspecies. These lists are intended to reach a wide readership and to stimulate co-operation among those interested in British Columbia's biology.
  • Ornithology 101 Part 1 – Taxonomy

    Ornithology 101 Part 1 – Taxonomy

    Ornithology 101 Part 1 – Taxonomy By Robert G. Fisher It is difficult to be a birder for long without wanting to know more about Ornithology. Our on- line text accessed by the links below provides the information we think beginning and intermediate birders need to start learning the science of studying birds. We call it “Ornithology 101" because it is just a beginning. ¹ I have drawn heavily on the following texts in preparing this course: Frank B. Gill, Ornithology, Second edition, W. H. Freeman & Co., 1994; J. Van Tyne & A. Berger, Fundamentals of Ornithology, John Wiley & Sons., 1961. Persons who want a more thorough grounding are encouraged to study the Gill text in conjunction with my written lectures. I Taxonomy and Nomenclature Experienced birders occasionally throw around Latin-sounding words like “Procellariforms” and “Icterids.” Sometimes they do it to show off, but more often it is just a shorthand way of designating a grouping of birds. For example, rather than say, “We may see birds in the family of auks, murres, puffins, guillemots, dovekies, auklets and murrelets on our pelagic trip today,” a knowledgeable birder could say, simply, “We may see alcids today.” He means that some of the birds seen on the ocean trip may belong to the family, “Alcidae,” which includes all of the auks, murres, puffins, guillemots, dovekies, auklets and murrelets. If you want to understand the talk of experienced birders, you need to have a basic knowledge of bird taxonomy, the science of classifying and naming birds. The Binomial System If you took high school General Science or Biology, you may remember that every animal and plant has a two-part Latin name according to the “binomial system.” The Swedish naturalist, Linnaeus, founded it in the 18th century.
  • Gap Analysis Project (GAP) Terrestrial Vertebrate Species Richness Maps for the Conterminous U.S

    Gap Analysis Project (GAP) Terrestrial Vertebrate Species Richness Maps for the Conterminous U.S

    Prepared in cooperation with North Carolina State University, New Mexico State University, and Boise State University Gap Analysis Project (GAP) Terrestrial Vertebrate Species Richness Maps for the Conterminous U.S. Scientific Investigations Report 2019–5034 U.S. Department of the Interior U.S. Geological Survey Cover. Mosaic of amphibian, bird, mammal, and reptile species richness maps derived from species’ habitat distribution models of the conterminous United States. Gap Analysis Project (GAP) Terrestrial Vertebrate Species Richness Maps for the Conterminous U.S. By Kevin J. Gergely, Kenneth G. Boykin, Alexa J. McKerrow, Matthew J. Rubino, Nathan M. Tarr, and Steven G. Williams Prepared in cooperation with North Carolina State University, New Mexico State University, and Boise State University Scientific Investigations Report 2019–5034 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior DAVID BERNHARDT, Secretary U.S. Geological Survey James F. Reilly II, Director U.S. Geological Survey, Reston, Virginia: 2019 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit https://www.usgs.gov or call 1–888–ASK–USGS (1–888–275–8747). For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text.
  • UC Davis UC Davis Previously Published Works

    UC Davis UC Davis Previously Published Works

    UC Davis UC Davis Previously Published Works Title Male territorial aggression and androgen modulation in high latitude populations of the Sooty, Passerella iliaca sinuosa, and Red Fox Sparrow, Passerella iliaca zaboria Permalink https://escholarship.org/uc/item/9hh8q77g Journal Journal of Ornithology, 151(1) ISSN 1439-0361 Authors Wacker, Douglas W. Coverdill, Alexander J. Bauer, Carolyn M. et al. Publication Date 2010 DOI 10.1007/s10336-009-0428-9 Peer reviewed eScholarship.org Powered by the California Digital Library University of California J Ornithol (2010) 151:79–86 DOI 10.1007/s10336-009-0428-9 ORIGINAL ARTICLE Male territorial aggression and androgen modulation in high latitude populations of the Sooty, Passerella iliaca sinuosa, and Red Fox Sparrow, Passerella iliaca zaboria Douglas W. Wacker Æ Alexander J. Coverdill Æ Carolyn M. Bauer Æ John C. Wingfield Received: 22 October 2008 / Revised: 11 March 2009 / Accepted: 25 May 2009 / Published online: 26 June 2009 Ó The Author(s) 2009. This article is published with open access at Springerlink.com Abstract The Fox Sparrows, Passerella iliaca, include subarctic Red Fox Sparrows had slightly higher circulating multiple groups and subspecies distributed at several lati- androgen levels (2.29 ng/ml) than arctic males (1.10 ng/ml) tudes from the Alaskan arctic to the southwestern United in the mid–late breeding season. However, androgen levels States. As such, this species represents a potential model for were not correlated with blood collection time after a social investigating latitudinal variation in androgen secretion and challenge in either group, suggesting that neither arctic nor aggressive territoriality in male passerines.
  • In This Issue

    In This Issue

    on Birdtegon tick! sormtliology In this issue: The Breeding Fox Sparrows (Passerella i/iaca) of the Northern Cascade Mountains of Oregon Stephen G. Doivlan 200 OFO Field Trip To Churchill, Manitoba Chuck Gates 208 Birding Hot Spots: Millicoma Marsh, Coos County Tim Rodenkirk 209 Breeding Western Scrub-lays in Crook County Nancy MacDonald 212 The Next Generation Compiled by Alan Contreras 213 Oregon's First Spring Record of Sharp-tailed Sandpiper {Calidris acuminata) David J. Tauten and Kathleen A. Castelein 217 FIELD NOTES: Western Oregon, Summer 2000 BillTice 218 FIELD NOTES: Eastern Oregon, Summer 2000 Kevin T. Spencer 221 HY Northern Mockingbird in Jackson Co. Photos by Dennis P. Vroman 227 In the Insert: President's Message, OFO Bookcase, OFO Membership Form, Year 2000 Listing Form, Noah Strycker, part of The Next Generation/Photo by Bob Keefer Volunteer Opportunities, OFO Weekends Oregon Birds Oregon Field Ornithologists P.O. Box 10373, Eugene, OR 97440 www.oregonbirds.org The mission of Oregon Field Ornithologists is to further the knowledge, education, enjoyment and science of birds and birding in Oregon Officers and Board of Directors President Paul T. Sullivan, Beaverton, (2001), [email protected] Secretary Tom Winters, John Day (2001), [email protected] Treasurer Mary Anne Sohlstrom, Salem (2001), [email protected] Directors Steve Dowlan, Mehama (2001), [email protected] Tom Love, Durham (2002), [email protected] Frank Mayer, Klamadi Falls, (2002), [email protected] Dennis Vroman, Grants Pass (2001), [email protected] Past President Ray Korpi, Vancouver, WA, (2001), [email protected] Committees of Oregon Field Ornithologists Publications Open Archivist Paul T.
  • Borror's Species Checklist for the Isles of Shoals Archipelago

    Borror's Species Checklist for the Isles of Shoals Archipelago

    Borror’s Species Checklist for the Isles of Shoals Archipelago May 2009 Edition Meg N. Eastwood, Kipp Quinby, Robin Hadlock Seeley, Christine Bogdanowicz, Hal Weeks, and William E. Bemis Borror’s Species Checklist for Shoals Marine Laboratory May 2009 Edition Meg Eastwood, Kipp Quinby, Christine Bogdanowicz, Robin Hadlock Seeley, Hal Weeks, and William E. Bemis Shoals Marine Laboratory Morse Hall, Suite 113 8 College Road Durham, NH, 03824 Send suggestions for improvements to: [email protected] File Name: SML_Checklist_05_2009.docx Last Saved Date: 5/15/09 12:38 PM TABLE OF CONTENTS TABLE OF CONTENTS i INTRODUCTION TO 2009 REVISION 1 PREFACE TO THE 1995 EDITION BY ARTHUR C. BORROR 3 CYANOBACTERIA 5 Phylum Cyanophyta 5 Class Cyanophyceae 5 Order Chroococcales 5 Order Nostocales 5 Order Oscillatoriales 5 DINOFLAGELLATES 5 Phylum Pyrrophyta 5 Class Dinophyceae 5 Order Dinophysiales 5 Order Gymnodiniales 5 Order Peridiniales 5 DIATOMS 5 Phylum Bacillariophyta 5 Class Bacillariophyceae 5 Order Bacillariales 5 Class Coscinodiscophyceae 5 Order Achnanthales 5 Order Biddulphiales 5 Order Chaetocerotales 5 Order Coscinodiscales 6 Order Lithodesmidales 6 Order Naviculales 6 Order Rhizosoleniales 6 Order Thalassiosirales 6 Class Fragilariophyceae 6 Order Fragilariales 6 Order Rhabdonematales 6 ALGAE 6 Phylum Heterokontophyta 6 Class Phaeophyceae 6 Order Chordariales 6 Order Desmarestiales 6 Order Dictyosiphonales 6 Order Ectocarpales 7 Order Fucales 7 Order Laminariales 7 Order Scytosiphonales 8 Order Sphacelariales 8 Phylum Rhodophyta 8 Class Rhodophyceae