DOCSLIB.ORG

Introduction

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Introduction AMNWR 08/13 BIOLOGICAL MONITORING AT AIKTAK ISLAND, ALASKA IN 2008: SUMMARY APPENDICES Brie A. Drummond Key words: Aiktak Island, Alaska, Aleutian Islands, ancient murrelet, Cepphus columba, common murre, double-crested cormorant, fork-tailed storm-petrel, Fratercula cirrhata, Fratercula corniculata, glaucous-winged gull, horned puffin, Larus glaucescens, Leach’s storm-petrel, Oceanodroma leucorhoa, Oceanodroma furcata, pelagic cormorant, Phalacrocorax auritus, Phalacrocorax pelagicus, Phalacrocorax urile, pigeon guillemot, population trends, productivity, red-faced cormorant, Synthliboramphus antiquus, thick-billed murre, tufted puffin, Uria aalge, Uria lomvia U.S. Fish and Wildlife Service Alaska Maritime National Wildlife Refuge Aleutian Islands Unit 95 Sterling Hwy, Suite 1 Homer, Alaska 99603 September 2008 Cite as: Drummond, B. A. Biological monitoring at Aiktak Island, Alaska in 2008: summary appendices. U.S. Fish and Wildl. Serv. Rep., AMNWR 08/13. Homer, Alaska. 139 pp. Southern coast of Aiktak Island, Alaska, in early June. TABLE OF CONTENTS PAGE INTRODUCTION.......................................................................................................................................... 1 STUDY AREA............................................................................................................................................. ..1 METHODS.................................................................................................................................................. ..2 INTERESTING OBSERVATIONS............................................................................................................... .7 ACKNOWLEDGMENTS............................................................................................................................. ..7 REFERENCES............................................................................................................................................. 8 FIGURES AND TABLES............................................................................................................…............. 11 Fork-tailed storm-petrel............................................................................................................................... 12 Breeding chronology............................................................................................................................ 12 Reproductive performance................................................................................................................... 15 Chick growth......................................................................................................................................... 18 Food habits........................................................................................................................................... 19 Leach’s storm-petrel............................................................................................................................... … 22 Breeding chronology............................................................................................................................ 22 Reproductive performance................................................................................................................... 25 Chick growth........................................................................................................................................ 28 Food habits........................................................................................................................................... 29 All storm-petrel species.............................................................................................................................. 32 Reproductive performance................................................................................................................... 32 Populations........................................................................................................................................... 35 Morphology........................................................................................................................................... 38 Band resightings.................................................................................................................................. 39 Double-crested cormorant.......................................................................................................................... 40 Reproductive performance................................................................................................................... 40 Red-faced cormorant.................................................................................................................................. 41 Reproductive performance................................................................................................................... 41 Pelagic cormorant....................................................................................................................................... 42 Reproductive performance................................................................................................................... 42 All cormorant species................................................................................................................................. 43 Reproductive performance................................................................................................................... 43 Populations........................................................................................................................................... 44 Black oystercatcher.....................................................................................................................................45 Breeding chronology.............................................................................................................................45 Reproductive performance................................................................................................................... 48 Populations........................................................................................................................................... 50 Glaucous-winged gull..................................................................................................................................52 Breeding chronology.............................................................................................................................52 Reproductive performance................................................................................................................... 55 Populations.......................................................................................................................................... 58 Food habits...........................................................................................................................................64 Common murre........................................................................................................................................... 69 Breeding chronology............................................................................................................................ 69 Reproductive performance................................................................................................................... 72 Thick-billed murre....................................................................................................................................... 74 Breeding chronology.............................................................................................................................74 Reproductive performance................................................................................................................... 77 All murre species........................................................................................................................................ 79 Populations........................................................................................................................................... 79 Pigeon guillemot......................................................................................................................................... 83 Populations........................................................................................................................................... 83 Ancient murrelet.......................................................................................................................................... 87 Breeding chronology............................................................................................................................ 87 i Reproductive performance................................................................................................................... 90 Horned puffin...............................................................................................................................................92 Breeding chronology.............................................................................................................................92 Reproductive performance................................................................................................................... 95 Chick growth.......................................................................................................................................
Load more

Recommended publications
  • Biological Monitoring at Aiktak Island, Alaska in 2016
    AMNWR 2017/02 BIOLOGICAL MONITORING AT AIKTAK ISLAND, ALASKA IN 2016 Sarah M. Youngren, Daniel C. Rapp, and Nora A. Rojek Key words: Aiktak Island, Alaska, Aleutian Islands, ancient murrelet, Cepphus columba, common murre, double-crested cormorant, fork-tailed storm-petrel, Fratercula cirrhata, Fratercula corniculata, glaucous-winged gull, horned puffin, Larus glaucescens, Leach’s storm-petrel, Oceanodroma furcata, Oceanodroma leucorhoa, pelagic cormorant, Phalacrocorax auritus, Phalacrocorax pelagicus, Phalacrocorax urile, pigeon guillemot, population trends, productivity, red-faced cormorant, Synthliboramphus antiquus, thick-billed murre, tufted puffin, Uria aalge, Uria lomvia. U.S. Fish and Wildlife Service Alaska Maritime National Wildlife Refuge 95 Sterling Highway, Suite 1 Homer, AK 99603 January 2017 Cite as: Youngren, S. M., D. C. Rapp, and N. A. Rojek. 2017. Biological monitoring at Aiktak Island, Alaska in 2016. U.S. Fish and Wildl. Serv. Rep., AMNWR 2017/02. Homer, Alaska. Tufted puffins flying along the southern coast of Aiktak Island, Alaska. TABLE OF CONTENTS Page INTRODUCTION ........................................................................................................................................... 1 STUDY AREA ............................................................................................................................................... 1 METHODS ...................................................................................................................................................
    [Show full text]
  • Aleutian Islands
    Journal of Global Change Data & Discovery. 2018, 2(1): 109-114 © 2018 GCdataPR DOI:10.3974/geodp.2018.01.18 Global Change Research Data Publishing & Repository www.geodoi.ac.cn Global Change Data Encyclopedia Aleutian Islands Liu, C.1* Yang, A. Q.2 Hu, W. Y.1 Liu, R. G.1 Shi, R. X.1 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2. Institute of Remote Sensing and Digital Earth，Chinese Academy of Sciences，Beijing100101，China Keywords: Aleutian Islands; Fox Islands; Four Mountains Islands; Andreanof Islands; Rat Islands; Near Islands; Kommandor Islands; Unimak Island; USA; Russia; data encyclopedia The Aleutian Islands extends latitude from 51°12′35″N to 55°22′14″N and longitude about 32 degrees from 165°45′10″E to 162°21′10″W, it is a chain volcanic islands belonging to both the United States and Russia[1–3] (Figure 1, 2). The islands are formed in the northern part of the Pacific Ring of Fire. They form part of the Aleutian Arc in the Northern Pacific Ocean, extending about 1,900 km westward from the Alaska Peninsula to- ward the Kamchatka Peninsula in Russia, Figure 1 Dataset of Aleutian Islands in .kmz format and mark a dividing line between the Ber- ing Sea to the north and the Pacific Ocean to the south. The islands comprise 6 groups of islands (east to west): the Fox Islands[4–5], islands of Four Mountains[6–7], Andreanof Islands[8–9], Rat Islands[10–11], Near Is- lands[12–13] and Kommandor Islands[14–15].
    [Show full text]
  • Volume 44, Number 2 2017 PACIFIC SEABIRD GROUP Dedicated to the Study and Conservation of Pacific Seabirds and Their Environment
    PACIFIC SEABIRDS A Publication of the Pacific Seabird Group Volume 44, Number 2 2017 PACIFIC SEABIRD GROUP Dedicated to the Study and Conservation of Pacific Seabirds and Their Environment The Pacific Seabird Group (PSG) is a society of professional seabird researchers and managers dedicated to the study and conservation of seabirds. PSG was formed in 1972 out of a need for increased communication among academic and government seabird researchers. The principal goals of PSG are to (1) increase the quality and quantity of seabird research through facilitating exchange of information; (2) identify and assess the importance of threats to seabird populations; and (3) provide government agencies and others with expert advice on managing populations of seabirds. PSG is headed by an Executive Council composed of members volunteering their time. Members include biologists, wildlife managers, students, and conservationists from the United States, Mexico, Canada, Japan and 12 other countries. PSG annual meetings and publications provide forums where members can share their findings on all research topics relating to Pacific seabirds and discuss local and large scale conservation issues. Abstracts for meetings are published on our website. PSG publishes the on-line bulletin Pacific Seabirds (formerly the PSG Bulletin; www.pacificseabirdgroup.org) and the journal Marine Ornithology (www.marineornithology.org). Other publications include symposium volumes and technical reports; these are listed near the back of this issue. PSG is a member of the Ornithological Council and the American Bird Conservancy. Annual dues for membership are $40 (individual); $30 (student, undergraduate and graduate); and $1,200 (Life Membership, payable in five $240 installments).
    [Show full text]
  • 17 R.-..Ry 19" OCS Study MMS 88-0092
    OCISt.., "'1~2 Ecologic.1 Allociue. SYII'tUsIS 0' ~c. (I( 1'B IPnCfS OP MOISE AlII) DIsmuA1K2 a, IIUc. IIADLOft m.::IIIDA1'IONS or lUIS SIA PI.-IPms fr •• LGL Muke ••••• rda Aaeoc:iat_, Inc •• 505 "-t IIortbera Lllbta .1••••,"Sait. 201 ABdaonp, AlMke 99503 for u.s. tIl_rala •••••••••• Seni.ce Al_1taa o.t.r CoIItlM11tal Shelf legion U.S. u.,c. of Iat.dor ••• 603, ,., EMt 36tla A.-... A8eb0ra•• , Aluke 99501 Coatraet _. 14-12-00CU-30361 LGL •••••• 'U 821 17 r.-..ry 19" OCS Study MMS 88-0092 StAllUIS OWIUOlMUc. 011'DB &IIBCfI ,. 11010 AlII) DIS'ftJU8CB 011llAJoa IWJLOU'r COIICIII'DArIa. OW101. SB&PIDU&DI by S.R. Johnson J.J. Burnsl C.I. Malme2 R.A. Davis LGL Alaska Research Associatel, Inc. 505 West Northern Lights Blv~., Suite 201 Anchorage, Alaska 99503 for u.S. Minerals Management Service Alaskan Outer Continental Shelf Region U.S. Dept. of Interior Room 603, 949 East 36th Avenue Anchorage, Alaska 99508 Contract no. 14-12-0001-30361 LGL Rep. No. TA 828 17 February 1989 The opinionl, findings, conclusions, or recolmBendations expressed in this report are those of the authors and do not necessarily reflect the views of the U.S. Dept. of the Interior. nor does mention of trade names or commercial products constitute endorsement or recommendation for use by the Federal Government. 1 Living Resources Inc., Fairbanks, AK 2 BBN Systems and Technologies Corporation, Cambridge, MA Table of Contents ii 'UIU or cc»mll UBLBor cowmll ii AIS'lIAC'f • · . vi Inter-site Population Sensitivity Index (IPSI) vi Norton Basin Planning Area • • vii St.
    [Show full text]
  • Volume 35 Number 2 Fall 2008
    PACIFIC SEABIRDS A Publication of the Pacific Seabird Group Volume 35 Number 2 Fall 2008 PACIFIC SEABIRD GROUP Dedicated to the Study and Conservation of Pacific Seabirds and Their Environment The Pacific Seabird Group (PSG) was formed in 1972 due to the need for better communication among Pacific seabird researchers. PSG provides a forum for the research activities of its members, promotes the conservation of seabirds, and informs members and the public of issues relating to Pacific Ocean seabirds and their environment. PSG members include research scientists, conservation professionals, and members of the public from all parts of the Pacific Ocean. The group also welcomes seabird professionals and enthusiasts in other parts of the world. PSG holds annual meetings at which scientific papers and symposia are presented; abstracts for meetings are published on our web site. The group is active in promoting conservation of seabirds, include seabird/fisheries interactions, monitoring of seabird populations, seabird restoration following oil spills, establishment of seabird sanctuaries, and endangered species. Policy statements are issued on conservation issues of critical importance. PSG’s journals are Pacific Seabirds (formerly the PSG Bulletin) and Marine Ornithology. Other publications include symposium volumes and technical reports; these are listed near the back of this issue. PSG is a member of the International Union for Conservation of Nature (IUCN), the Ornithological Council, and the American Bird Conservancy. Annual dues for membership are $30 (individual and family); $24 (student, undergraduate and graduate); and $900 (Life Membership, payable in five $180 installments). Dues are payable to the Treasurer; see the PSG web site, or the Membership Order Form next to inside back cover.
    [Show full text]
  • GOA Book.Indb
    Elmer E. Rasmuson Library Cataloging in Publication Data The Gulf of Alaska : biology and oceanography / Phillip R. Mundy, ed. – Fairbanks : Alaska Sea Grant College Program, University of Alaska Fairbanks 2005. p. : ill., maps ; cm. – (Alaska Sea Grant College Program ; AK-SG-05-01) Includes bibliographical references and index. ISBN 1-56612-090-x 1. Marine biology—Alaska, Gulf of. 2. Oceanography—Alaska. 3. Ecosystem health—Alaska, Gulf of. I. Title. II. Mundy, Phillip R. (Phillip Roy). Series: Alaska Sea Grant College Program report ; AK-SG-05-01. QH95.35.G845 2005 Citation: Mundy, Phillip R. (ed.). 2005. The Gulf of Alaska: Biology and Oceanography. Alaska Sea Grant College Program, University of Alaska Fairbanks. CREDITS Work for this book was supported by a grant from the Exxon Valdez Oil Spill Trustee Council, Anchorage, Alaska. The Exxon Valdez Oil Spill Trustee Council oversees restoration of the injured ecosystem through a civil settlement that includes the State of Alaska, the U.S. Federal Government, and the Exxon Company. Please see http://www.evostc.state.ak.us. ATMOSP ND HE Publisher of the book is the Alaska Sea Grant College Program, supported by R A IC IC A N D A M E I C N O I S the U.S. Department of Commerce, NOAA National Sea Grant Office, grant L T A R N A T O I I O T N A NA16RG2321, project A/161-01; and by the University of Alaska Fairbanks N U E S C with state funds. The University of Alaska is an affirmative action/equal D R E E P M A M RT O MENT OF C opportunity employer and educational institution.
    [Show full text]
  • Shorezone Aerial Video Imaging (AVI) Survey Team Unalaska (UA) April 8-14, 2016
    CORI Project: 15CRCS0012 (15-31) May 2016 FLIGHT REPORT ShoreZone Aerial Video Imaging (AVI) Survey Team Unalaska (UA) April 8-14, 2016 Prepared for: NOAA National Marine Fisheries Service Alaska, Region Prepared by: Coastal & Ocean Resources Victoria, BC SUMMARY This flight report summarizes the field activities of the ShoreZone aerial video imaging survey conducted out of Unalaska, Alaska during April 8-14, 2016. The survey was conducted by Coastal & Ocean Resources for NOAA NMFS Alaska Region under Contract AB-133F-13-CQ-0038 Order T0011. Table 1 provides a summary of field crew affiliations and responsibilities. The tables and figures on the following pages summarize the extent and location of the 2,325 km of shoreline imagery now available for ShoreZone mapping. A Bell 206 helicopter charted from Egli Air Haul based in King Salmon, Alaska was utilized by the team. Imagery was collected looking at the shoreline from the left side of the aircraft through large open photography shooting windows. A total of 31 HD videos were collected during the survey and recorded to MP4 format (Tables 2). This report contains a summary table and map for each video, illustrating its location, length, and key geographic points. Maps for each video are annotated with representative geographic names, trackline times (hh:mm:ss UTC; UTC time is 8 hours ahead of Alaska Daylight Time) and photo numbers. All videos and photos are supplied on a hard drive organized by video number and named consistently with the ShoreZone image library data schema. A total of 23,257 photos were collected by the team.
    [Show full text]
  • Pribilof Snow Bunting
    Alaska Species Ranking System - Pribilof Snow Bunting Pribilof Snow Bunting Class: Aves Order: Passeriformes Plectrophenax nivalis townsendi Note: This assessment refers to this subspecies only. Review Status: Review requested Version Date: 24 June 2020 Conservation Status NatureServe: Agency: G Rank:G5 ADF&G: Species of Greatest Conservation Need IUCN:Least Concern Audubon AK:Watch S Rank: S5 USFWS: BLM: Final Rank Conservation category: IV. Orange unknown status and high biological vulnerability and action need Category Range Score Status -20 to 20 0 Biological -50 to 50 -10 Action -40 to 40 24 Higher numerical scores denote greater concern Status - variables measure the trend in a taxon’s population status or distribution. Higher status scores denote taxa with known declining trends. Status scores range from -20 (increasing) to 20 (decreasing). Score Population Trend in Alaska (-10 to 10) 0 Unknown. Distribution Trend in Alaska (-10 to 10) 0 Unknown. Status Total: 0 Biological - variables measure aspects of a taxon’s distribution, abundance and life history. Higher biological scores suggest greater vulnerability to extirpation. Biological scores range from -50 (least vulnerable) to 50 (most vulnerable). Score Population Size in Alaska (-10 to 10) 6 Unknown, but suspected small given restricted range. Range Size in Alaska (-10 to 10) -2 Occurs year-round on the western Alaska Peninsula and on the Shumagin, Aleutian, and Pribilof Islands (Gibson and Byrd 2007; Gibson and Withrow 2015). May intergrade with P. n. nivalis east of the central Aleutian Islands (Montgomerie and Lyon 2011b; Gibson and Withrow 2015). Some birds migrate further south to southern Alaska, Canada, and the northern U.S.
    [Show full text]
  • Alaska Seabird Information Series
    Alaska Seabird Information Series U.S. Fish & Wildlife Service Migratory Bird Management Nongame Program November 2006 Alaska Seabird Information Series (ASIS) Compiled by Lynn Denlinger Seabird Colonies in Alaska U.S. Fish and Wildlife Service Migratory Bird Management Nongame Program 1011 E. Tudor Road Anchorage, Alaska 99503-6199 November 2006 _____ Suggested Citation: Denlinger, L.M. 2006. Alaska Seabird Information Series. Unpubl. Rept., U.S. Fish and Wildl. Serv., Migr. Bird Manage., Nongame Program, Anchorage, AK. Cover Photo: Alaska Maritime National Wildlife Refuge Crested Auklets ― Aleutian Islands TABLE OF CONTENTS Page Preface………………………………………………………………………………………………………………….i Acknowledgements and Credits………………………………………………………………..................................ii TUBENOSE BIRDS Pages Black-footed Albatross (Phoebastria nigripes)……………………………………….. ..............................1 and 2 Laysan Albatross (Phoebastria immutabilis)................................................................................................3 and 4 Short-tailed Albatross (Phoebastria albatrus)...............................................................................................5 and 6 Sooty Shearwater (Puffinus griseus)..............................................................................................................7 and 8 Short-tailed Shearwater Puffinus tenuirostris).............................................................................................9 and 10 Northern Fulmar (Fulmarus glacialis)…………………………………………………………………...11
    [Show full text]
  • Aleutian Islands
    324 ¢ U.S. Coast Pilot 9, Chapter 7 Chapter 9, Pilot Coast U.S. 180°W 176°W 172°W 168°W 164°W Chart Coverage in Coast Pilot 9—Chapter 7 NOAA’s Online Interactive Chart Catalog has complete chart coverage http://www.charts.noaa.gov/InteractiveCatalog/nrnc.shtml 16011 172°W 176°W 58°N St. Paul Island BERING SEA St. George Island 56°N Unimak Island 16528 16518 16531 16500 16517 54°N S 16515 16433 16435 D L A N 16511 A L E U T I A N I S 16522 16501 16520 Attu Island A 16421 16436 16480 M 16521 16430 U K 16514 T 16487 16490 A 16513 16463 Agattu Island P 16431 A S 16471 S S S 16441 A P 52°N 16432 A 16434 K 16423 Kiska Island T Adak Island I 16465 16486 16420 16442 16450 H C 16467 M A 16462 16440 16460 50°N 16012 26 SEP2021 NORTH PA CIFIC OCEAN 26 SEP 2021 U.S. Coast Pilot 9, Chapter 7 ¢ 325 Aleutian Islands (1) This chapter describes the Aleutian Islands and the 26 51°11.83'N., 179°50.46'W. 31 51°37.86'N., 171°34.53'W. many passes leading from the Pacific Ocean into the 27 52°39.35'N., 178°39.78'W. 32 51°15.27'N., 172°36.40'W. Bering Sea. Also described are the harbors of Dutch 28 53°13.18'N., 173°49.18'W. 33 50°21.63'N., 179°24.20'W. Harbor on Unalaska Island; Kuluk Bay on Adak Island; Massacre Bay on Attu Island; and many other smaller 29 53°02.71'N., 172°51.16'W.
    [Show full text]
  • ALASKA MARITIME NATIONAL WILDLIFE REFUGE HOMER, ALASKA ANNUAL NARRATIVE REPORT CALENDER YEAR 1989 U.S. Department of Fish and Wi
    ALASKA MARITIME NATIONAL WILDLIFE REFUGE HOMER, ALASKA ANNUAL NARRATIVE REPORT CALENDER YEAR 1989 u.s. Department of Fish and Wildlife NATIONAL WILDLIFE HOMER OFFICE ALASKA MARITIME NATIONAL WILDLIFE REFUGE Homer, Alaska ANNUAL NARRATIVE REPORT Calendar Year 1989 u.s. Department of Interior Fish and Wildlife Service NATIONAL WILDLIFE REFUGE SYSTEM REVIEW AND APPROVALS ALASKA MARITIME NATIONAL WILDLIFE REFUGE Homer, Alaska ANNUAL NARRATIVE REPORT Calendar Year 1989 /6~?ta~r · -~~ ~ .. A:'ocf~~Date-· C/ Refuges & Wildlife ~~___#_._ Regional Off1ce Approval Date INTRODUCTION Homer Headquarters Office Alaska Maritime National Wildlife Refuge The 3,500,000 acre Alaska Maritime National Wildlife Refuge (Maritime Refuge} was established in 1980 by the Alaska National Interest Lands Conservation Act (Lands Act}. This act added 460,000 acres of additional lands to eleven existing refuges combining practically all coastal refuge areas under one office. There are about 3,000 headlands, islands, islets, and pinnacle rocks within the refuge. These areas are used annually by about 75 million nesting seabirds representing about 80 percent of Alaska's seabird population. Each of the eleven refuges included in the Maritime Refuge had their own establishing authority and purposes, but the Lands Act added to these stating management shall: 1} conserve fish and wildlife populations and habitats in their natural diversity; 2} fulfill the international treaty obligations of the United States with respect to fish and wildlife and their habitats; 3} provide the opportunity for continued subsistence uses by local residents; 4} provide a program of national and international scientific research on marine resources; and 5} ensure, to the maximum extent practicable, water quality and necessary water quantity within the refuge.
    [Show full text]
  • Avian Predator Buffers Against Variability in Marine Habitats with Flexible Foraging Behavior
    See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/323201633 Avian predator buffers against variability in marine habitats with flexible foraging behavior Article in Marine Biology · February 2018 DOI: 10.1007/s00227-018-3304-4 CITATIONS READS 3 190 10 authors, including: John F Piatt Mayumi L. Arimitsu United States Geological Survey United States Geological Survey 204 PUBLICATIONS 10,798 CITATIONS 32 PUBLICATIONS 450 CITATIONS SEE PROFILE SEE PROFILE Gary Drew Martin Renner United States Geological Survey 42 PUBLICATIONS 721 CITATIONS 33 PUBLICATIONS 590 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Reconnaissance of the intertidal and shallow subtidal benthic of Kasatochi Island following the 2008 volcanic eruption. View project Seabird ecology View project All content following this page was uploaded by John F Piatt on 19 February 2018. The user has requested enhancement of the downloaded file. Marine Biology (2018) 165:47 https://doi.org/10.1007/s00227-018-3304-4 ORIGINAL PAPER Avian predator bufers against variability in marine habitats with fexible foraging behavior Sarah K. Schoen1 · John F. Piatt1 · Mayumi L. Arimitsu2 · Brielle M. Hefin2 · Erica N. Madison1 · Gary S. Drew1 · Martin Renner3 · Nora A. Rojek4 · David C. Douglas2 · Anthony R. DeGange1 Received: 11 September 2017 / Accepted: 31 January 2018 © This is a U.S. government work and its text is not subject to copyright protection in the United States; however, its text may be subject to foreign copyright protection 2018 Abstract How well seabirds compensate for variability in prey abundance and composition near their breeding colonies infuences their distribution and reproductive success.
    [Show full text]