DOCSLIB.ORG

Nest Insulation and Incubation Constancy of Arctic Geese

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Nest Insulation and Incubation Constancy of Arctic Geese Nest insulation and incubation constancy of arctic geese STEVEN C. THOMPSON and DENNIS G. RAVELING Introduction as better insulated nests may be more conspicuous (M 0 ller 1984). Proper and timely development of avian In geese (Anserini), only females incu­ embryos depends upon maintenance of bate. Nests are constructed in shallow incubation temperatures within relatively depressions on the ground which are usually narrow limits (e.g. Lundy 1969; Drent lined with dry vegetation collected from the 1975). For many birds, especially species area immediately around the nest (Owen nesting in cold environments, insulation of 1980). Finally, the nest is lined with down nests conserves heat transferred to eggs and and a few contour feathers from the breast minimises the cost of incubation to parent of the female. When leaving the nest, geese birds. Various species of birds nesting at cover their eggs with a blanket of material high elevations or latitudes have bulkier or pulled from the lining of the nest. better insulated nests than close relatives Female geese rely heavily on endogenous nesting at lower elevations or latitudes reserves to sustain incubation (e.g. Ankney (Pearson 1953; Corley Smith 1969; Collias and Maclnnes 1978; Raveling 1979a, b) and and Collias 1971; M0ller 1984). Furth­ are extremely attentive to their nests ermore, the amount of nest insulation may (Cooper 1978; Aldrich and Raveling 1983; be negatively correlated with nest attentive­ Thompson and Raveling 1987). There is, ness (White and Kinney 1974). however, considerable variation in patterns In many species, the incubating bird of incubation. For example. Emperor leaves the nest for a period (a recess) to G eese Anser canagicus, Cackling Canada obtain food and/or engage in other main­ G eese Branta canadensis minima and Black tenance activities. Nest insulation can B rant B. bernicla nigricans all nest on the reduce the rate of heat loss from eggs and Yukon-Kuskokwim Delta of Alaska, but thereby increase the length of recess with­ exhibit a two-fold difference in recess out causing harm to embryos, and minimise lengths and a thirteen-fold difference in the time and energy expended to rewarm recess frequencies, resulting in a twenty­ the eggs. Species with single-sex incubation fold difference in daily recess time between tend to have large, well insulated nests the least and most attentive species (Table compared with species in which both sexes 1). These differences are thought to be incubate on a rotational basis (O’Conner primarily related to the abilities of the 1978). It may therefore be expected that different-sized goose species to repel dif­ variation in the insulation of nests among ferent types of predators (Thompson and similar species in a given environment may Raveling 1987). be related to differences in incubation There are evident differences in nest rhythms. Conversely, predation may limit structure among Emperor Geese, Cackling nest insulation by selecting for cryptic nests G eese and B rant (Figure 1). B rant nests Tabic I. Nest attentiveness of Emperor Geese, Cackling Canada Geese and Black Brant, from, respectively, Thompson and Raveling (1978), Aldrich (1983) and Thompson (unpubl.). Total % time Modal Mean Mean Mean incubating recess recess recesses recess Species N (range) length (min) length (min) per day time/d (min) Emperor Goose 11 99.5 8 13 0.5 7 (99.1 - 99.7) Cacking Canada 12 93.6 15 26* 3.5* 92 Goose (89.1 - 96.6) Black Brant 4 89.6 22 22 6.7 148 (87.3 - 94.9) ‘Derived from published regression. 124 W ildfow l 39 ( 19NK): 124-132 Nest Insulation in arctic geese 125 Figure 1. Typical natural nests illustrating eggs exposed and covered of Emperor Goose (a,b). Cackling Goose (c,d) and Brant (e,f). 126 Steven C. Thompson and Denis G. Raveling contain by far the greatest quantities of Thermistor probes (YS1 model 400) were down and feathers, whereas Emperor implanted in 3 eggs of each clutch by drilling Goose nests contain the least amounts; the a hole down the long axis to the centre of intermediate amounts in Cackling Geese each egg, inserting the probe, and sealing nests differ more from Brant than from it in place with melted paraffin. Emperor Geese. Experiments were conducted in a The purpose of this study was to compare coldroom at approximately 6°C, providing differences in nest insulation quality of the ambient thermal conditions typical of those three species by measuring the cooling rates at Kokechik Bay (Eisenhauer and Kirk­ of eggs in their nests, and to relate those patrick 1977). Each nest was arranged in a differences to the incubation constancy of 5 cm deep depression in moist sand of the each species. The possible role of predation approximate natural dimensions reported as an agent selecting for differences in by Mickelson (1975). Although the sand conspicuousness and vulnerability of the was different from the material available to nests was also considered. geese on the Delta, it provided a standardi­ sed substrate. Clutches were heated in a drying oven at Methods approximately 40°C until internal egg tem­ peratures reached approximately 38°C, Six nests each of Emperor Geese, Cackling close to natural incubation temperatures Geese and Black Brant were collected, at (Drent 1975). The clutch was then immedi­ Kokechik Bay on the Yukon-Kuskokwim ately placed in a nest and covered with the Delta, Alaska, after depredation late in nest lining from the edges of the nest bowl. incubation or after hatch, to be certain that Cooling of eggs was then monitored for 30 little or no more material would have been minutes using strip chart recorders con­ added. Only nests judged to be relatively nected to the thermistors. Air temperature undisturbed by wind or predators were in the coldroom was simultaneously mea­ taken, and returned to the University of sured by a probe placed 10 cm from the California, Davis (UCD), where they were edge of the nest. Individual eggs of each weighed to the nearest gram on an electric species were placed in approximately the balance. same positions (Figure 2) in all tests to Eggs from the three goose species were minimise the effect of differences among emptied and then refilled with paraffin. This eggs. These positions simulated those in gave eggs with heating and cooling prop­ natural nests. Each of the 6 nests of each erties similar to those of natural eggs species was tested to discern the effects of (Schw artz et al. 1977), but approximately nest insulation relative to the combined 15% less in mass. The paraffin tended to effect on cooling of different clutch and egg expand upon heating and crack the shells sizes. Thus, each Emperor Goose nest was of eggs. Despite this problem, eggs retained tested containing, in random order, the their original mass and shape and provided clutches of Emperor Goose eggs, Cackling valid results for the comparative purposes Goose eggs, and Brant eggs. Each nest-egg of this study. Clutches were assembled of combination was tested in “calm” air (no 6 eggs of Emperor Geese, 5 of Cackling wind speed detectable with a Dwyer ane­ Geese, and 4 of Brant. These were typical mometer) and with a 10 km/h air flow over of natural clutches and eggs (Table 2). the nest (“windy”). This was provided by Table 2. Sizes and masses of praffin-filled eggs in experimental clutches. All eggs Thermistor-probed eggs Mean Mean Mean Mean Mean Mean egg egg egg egg egg egg Species n mass (g) length (mm) width (mm) n mass (g)* length (mm) width (mm) Emperor Goose 6 103 81 52 3 102 81 52 Cackling Goose 5 86 75 50 3 86 76 50 Black Brant 4 75 71 48 3 75 70 48 * Before insertion of thermistor probes. Nest Insulation in arctic geese 127 O BLACK BRANT o o EMPEROR CACKLING GOOSE GOOSE Figure 2. Arrangements of paraffin-filled eggs of Emperor Geese, Cackling Geese and Brant in experimental nests. Numbered eggs are those with thermistors. Arrows indicate direction of air flow over nests under windy conditions. a standard household box fan placed 50 cm (243.2±24.3 g) or Cackling Goose nests from the nest edge. Each nest was left (193.2+42.0 g) (PcO.OOl), but differences empty of eggs for at least an hour between in mass between the nests of the latter two tests, adequate for nest and substrate to species were not significant (P>0.05). The return to the ambient temperature. differences in mass were primarily due to Differences among values of initial egg the varying amounts of vegetation present temperatures, egg cooling, coldroom tem­ (Figure 1). peratures and nest masses were investigated Mean coldroom temperature during tests by Analysis of Variation (ANOVA), and was 6.41±0.04°C and did not vary signifi­ significance of differences between means cantly during tests of nest, egg or wind type. tested by the T-method. Average initial temperature of eggs was 38.7±0.1°C, and slight variations during tests for nest, egg or wind type or egg Results positions were not significant. ANOVA showed that relative differ­ The mean mass (x±s.e.) of Black Brant ences among nest types were the same nests (38.3±2.7 g) was significantly less regardless of the species of eggs they con­ than that of either Emperor Goose tained (Table 3). Variation in cooling of 128 Steven C. Thompson and Denis G. Raveling 6 o o W INDY LÜ OC 3 I- < CC LJ Ol S ÜJ CD e> LÜ CO < LÜ CC CALM O £ LJ CU LT EMPEROR CACKLING BLACK GOOSE GOOSE BRANT NEST TYPE Figure 3.
Load more

Recommended publications
  • 14Th North American Arctic Goose Conference and Workshop Program and Abstracts
    14th North American Arctic Goose Conference and Workshop Lincoln, Nebraska March 13-17, 2018 Program and Abstracts 14th North American Arctic Goose Conference and Workshop Program and Abstracts Table of Contents Welcome ................................................................................... 1 General Information ................................................................... 2 Conference Center Map ............................................................. 3 Conference Sponsors ................................................................ 4 Conference Committees ............................................................ 5 Plenary Speakers ...................................................................... 6 Meeting Schedule ...................................................................... 9 Abstracts–Plenaries ................................................................ 15 Abstracts–Oral Presentations .................................................. 17 Abstracts–Poster Presentations............................................... 43 14th North American Arctic Goose Conference and Workshop Lincoln, Nebraska March 13-17, 2018 We are pleased to welcome you to Lincoln and the 14th North American Arctic Goose Conference and Workshop! Lincoln is the state capital of Nebraska and home to the University of Nebraska. March is a special time in Nebraska. Millions of ducks and geese and a half-million sandhill cranes have or will come through the state stopping and “fueling” up before they migrate on to their
    [Show full text]
  • 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]
  • The Status and Occurrence of Emperor Goose (Chen Canagica) in British Columbia
    The Status and Occurrence of Emperor Goose (Chen canagica) in British Columbia. By Rick Toochin and Jamie Fenneman. Introduction and Distribution The Emperor Goose (Chen canagica) is largely restricted to the Bering Sea region of the North Pacific throughout the year (Schmutz et al. 2011). The species breeds in coastal habitats of western Alaska, including the Yukon-Kuskokwim delta, Seward Peninsula, and St. Lawrence Island, as well as along the coast of Russia from the Chukchi Peninsula south to Anadyr Bay (Schmutz et al. 2011). Most of the world’s population winters along the Aleutian Islands and the Alaska Peninsula, regularly occurring east to Kodiak Island (Schmutz et al. 2011). This Bering Sea species is a rare annual vagrant found south along the Pacific coast of North America, with numerous records south to southern California (Hamilton et al. 2007). Most records south of Alaska are from coastal habitats, although there are also many records from inland areas that support large numbers of wintering waterfowl south of British Columbia, including California’s Central Valley (Hamilton et al. 2007), Oregon’s Willamette Valley (Pacific Flyway Council 1998), and the Klamath Basin of northern California and southern Oregon (Hamilton et al. 2007).The only U.S. inland record away from the Pacific states is a bird collected in November 2000 in southern Idaho (IBRC 2014). Vagrants have also occurred south along the Pacific coast of Asia to Japan as well as in Hawaii (both singles and small flocks) (Schmutz et al. 2011). Although this species experienced population declines between the 1960s and 1980s, recent surveys suggest that populations have stabilized or even increased slightly over 1980s levels (Schmutz et al.
    [Show full text]
  • Arctic Goose Joint Venture STRATEGIC PLAN 2008 – 2012
    Arctic Goose Joint Venture STRATEGIC PLAN 2008 – 2012 Arctic Goose Joint Venture STRATEGIC PLAN 2008 – 2012 Cover Photos (clockwise from top left): Doug Steinke, Doug Steinke, John Conkin, Jeff Coats, Tim Moser, Tim Moser, Doug Steinke Arctic Goose Joint Venture Technical Committee. 2008. Arctic Goose Joint Venture Strategic Plan: 2008 - 2012. Unpubl. Rept. [c/o AGJV Coordination Office, CWS, Edmonton, Alberta]. 112pp. Strategic Plan 2008 – 2012 Table of Contents INtroductioN ................................................................................................................ 7 ACCOMPLISHMENts AND FUTURE CHALLENGES .................................................... 9 Past Accomplishments ....................................................................................................... 9 Banding ...................................................................................................................... 9 Surveys ..................................................................................................................... 10 Research ................................................................................................................... 10 Future Challenges ........................................................................................................... 11 INformatioN NEEDS AND Strategies to ADDRESS THEM ............................ 12 Definitions of Information Needs.................................................................................... 12 Strategies for Meeting the Information
    [Show full text]
  • A Molecular Phylogeny of Anseriformes Based on Mitochondrial DNA Analysis
    MOLECULAR PHYLOGENETICS AND EVOLUTION Molecular Phylogenetics and Evolution 23 (2002) 339–356 www.academicpress.com A molecular phylogeny of anseriformes based on mitochondrial DNA analysis Carole Donne-Goussee,a Vincent Laudet,b and Catherine Haanni€ a,* a CNRS UMR 5534, Centre de Genetique Moleculaire et Cellulaire, Universite Claude Bernard Lyon 1, 16 rue Raphael Dubois, Ba^t. Mendel, 69622 Villeurbanne Cedex, France b CNRS UMR 5665, Laboratoire de Biologie Moleculaire et Cellulaire, Ecole Normale Superieure de Lyon, 45 Allee d’Italie, 69364 Lyon Cedex 07, France Received 5 June 2001; received in revised form 4 December 2001 Abstract To study the phylogenetic relationships among Anseriformes, sequences for the complete mitochondrial control region (CR) were determined from 45 waterfowl representing 24 genera, i.e., half of the existing genera. To confirm the results based on CR analysis we also analyzed representative species based on two mitochondrial protein-coding genes, cytochrome b (cytb) and NADH dehydrogenase subunit 2 (ND2). These data allowed us to construct a robust phylogeny of the Anseriformes and to compare it with existing phylogenies based on morphological or molecular data. Chauna and Dendrocygna were identified as early offshoots of the Anseriformes. All the remaining taxa fell into two clades that correspond to the two subfamilies Anatinae and Anserinae. Within Anserinae Branta and Anser cluster together, whereas Coscoroba, Cygnus, and Cereopsis form a relatively weak clade with Cygnus diverging first. Five clades are clearly recognizable among Anatinae: (i) the Anatini with Anas and Lophonetta; (ii) the Aythyini with Aythya and Netta; (iii) the Cairinini with Cairina and Aix; (iv) the Mergini with Mergus, Bucephala, Melanitta, Callonetta, So- materia, and Clangula, and (v) the Tadornini with Tadorna, Chloephaga, and Alopochen.
    [Show full text]
  • Wildlife Population and Harvest Trends in the United States a Technical Document Supporting the Forest Service 2010 RPA Assessment
    Wildlife Population and Harvest Trends in the United States A Technical Document Supporting the Forest Service 2010 RPA Assessment Curtis H. Flather, Michael S. Knowles, Martin F. Jones, and Carol Schilli Flather, Curtis H.; Knowles, Michael S.; Jones, Martin F.; Schilli, Carol. 2013. Wildlife popu- lation and harvest trends in the United States: A technical document supporting the Forest Service 2010 RPA Assessment. Gen. Tech. Rep. RMRS-GTR-296. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 94 p. Abstract: The Forest and Rangeland Renewable Resources Planning Act (RPA) of 1974 requires periodic assessments of the condition and trends of the nation’s renewable natural resources. Data from many sources were used to document recent historical trends in big game, small game, migratory game birds, furbearers, nongame, and imperiled species. Big game and waterfowl have generally increased in population and harvest trends. Many small upland and webless migratory game bird species have declined notably in population or harvest. Considerable declines in fur harvest since the 2000 RPA Assessment have occurred. Among the 426 breeding bird species with sufficient data to estimate nationwide trends, 45 percent had stable abundance since the mid-1960s; however, more species declined (31 percent) than increased (24 percent). A total of 1,368 bird species were formally listed as threatened or endangered under the Endangered Species Act—a net gain of 278 species since the 2000 RPA Assessment. Most forest bird communities are expected to support a lower variety of species. America’s wildlife resources will continue to be pressured by diverse demands for ecosystem services from humans.
    [Show full text]
  • Waterfowl Population Status, 2021 Waterfowl Population Status, 2021
    U.S. Fish & Wildlife Service Waterfowl Population Status, 2021 Waterfowl Population Status, 2021 August 20, 2021 In the United States the process of establishing hunting regulations for waterfowl is conducted annually. This process involves a number of scheduled meetings in which information regarding the status of waterfowl is presented to individuals within the agencies responsible for setting hunting regulations. In addition, the proposed regulations are published in the Federal Register to allow public comment. This report includes the most current breeding population and production information available for waterfowl in North America and is a result of cooperative eforts by the U.S. Fish and Wildlife Service (USFWS), the Canadian Wildlife Service (CWS), various state and provincial conservation agencies, and private conservation organizations. In addition to providing current information on the status of populations, this report is intended to aid the development of waterfowl harvest regulations in the United States for the 2022–2023 hunting season. Cover: 2021 winning artwork from the Junior Duck Stamp Conservation and Design Program, by Margaret McMullen of Kansas, used with permission from the Federal Duck Stamp Ofce i Acknowledgments Waterfowl Population and Habitat Information: The information contained in this report is the result of the eforts of numerous individuals and organizations. Principal contributors include the Canadian Wildlife Service, U.S. Fish and Wildlife Service, state wildlife conservation agencies, provincial conservation agencies from Canada, and Direcci´on General de Conservaci´on Ecol´ogica de los Recursos Naturales, Mexico. In addition, several conservation organizations, other state and federal agencies, universities, and private individuals provided information or cooperated in survey activities.
    [Show full text]
  • Junior Duck Stamp Youth Guide
    Youth Guide Federal Junior Duck Stamp Program Connecting Children with Nature Through Science and Art! For young people grades K through 12 The mission of the U.S. Fish and Wildlife Service is working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people. WELCOME Introduction: The Call of the Wild Duck 7 Are you curious? Do you like to discover new things? Do you like to draw or write? Do you like to make a difference? Then give these activities a try! And try to solve the mystery of the Labrador Duck. UNIT 1: What is a Waterfowl? 25 Figure out how you can tell the differences among ducks, geese, and swans. Investigate why waterfowl have special feet and bills. Find out what inspired famous writers and artists to think about waterfowl, and make your first drawings of these unique birds. UNIT 2: A Day in the Life 59 Learn about amazing behaviors that help waterfowl survive. Explore the kinds of things that birds do. Investigate how behavior can help you tell the difference between one type of bird and another. Build a blind to help you watch waterfowl without being seen. UNIT 3: Raising a Family in a Wetland 87 Explore how a duck finds a mate. Investigate where a goose could make a home and not be disturbed. Describe in art or words how waterfowl parents protect their young from predators and weather. UNIT 4: Going the Distance 121 Investigate some of the mysteries of migration.
    [Show full text]
  • Arctic Species Trend Index: Migratory Birds Index
    CAFF Assessment Series Report September 2015 Arctic Species Trend Index: Migratory Birds Index ARCTIC COUNCIL Acknowledgements CAFF Designated Agencies: • Norwegian Environment Agency, Trondheim, Norway • Environment Canada, Ottawa, Canada • Faroese Museum of Natural History, Tórshavn, Faroe Islands (Kingdom of Denmark) • Finnish Ministry of the Environment, Helsinki, Finland • Icelandic Institute of Natural History, Reykjavik, Iceland • Ministry of Foreign Affairs, Greenland • Russian Federation Ministry of Natural Resources, Moscow, Russia • Swedish Environmental Protection Agency, Stockholm, Sweden • United States Department of the Interior, Fish and Wildlife Service, Anchorage, Alaska CAFF Permanent Participant Organizations: • Aleut International Association (AIA) • Arctic Athabaskan Council (AAC) • Gwich’in Council International (GCI) • Inuit Circumpolar Council (ICC) • Russian Indigenous Peoples of the North (RAIPON) • Saami Council This publication should be cited as: Deinet, S., Zöckler, C., Jacoby, D., Tresize, E., Marconi, V., McRae, L., Svobods, M., & Barry, T. (2015). The Arctic Species Trend Index: Migratory Birds Index. Conservation of Arctic Flora and Fauna, Akureyri, Iceland. ISBN: 978-9935-431-44-8 Cover photo: Arctic tern. Photo: Mark Medcalf/Shutterstock.com Back cover: Red knot. Photo: USFWS/Flickr Design and layout: Courtney Price For more information please contact: CAFF International Secretariat Borgir, Nordurslod 600 Akureyri, Iceland Phone: +354 462-3350 Fax: +354 462-3390 Email: [email protected] Internet: www.caff.is This report was commissioned and funded by the Conservation of Arctic Flora and Fauna (CAFF), the Biodiversity Working Group of the Arctic Council. Additional funding was provided by WWF International, the Zoological Society of London (ZSL) and the Convention on Migratory Species (CMS). The views expressed in this report are the responsibility of the authors and do not necessarily reflect the views of the Arctic Council or its members.
    [Show full text]
  • Ducks, Geese, and Swans of the World by Paul A
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Ducks, Geese, and Swans of the World by Paul A. Johnsgard Papers in the Biological Sciences 2010 Ducks, Geese, and Swans of the World: Contents, Preface, & Introduction Paul A. Johnsgard University of Nebraska-Lincoln, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/biosciducksgeeseswans Part of the Ornithology Commons Johnsgard, Paul A., "Ducks, Geese, and Swans of the World: Contents, Preface, & Introduction" (2010). Ducks, Geese, and Swans of the World by Paul A. Johnsgard. 2. https://digitalcommons.unl.edu/biosciducksgeeseswans/2 This Article is brought to you for free and open access by the Papers in the Biological Sciences at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Ducks, Geese, and Swans of the World by Paul A. Johnsgard by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. DUCKS, GEESE, and SWANS of the World Paul A. Johnsgard Revised Edition Ducks, Geese, and Swans of the World By Paul A. Johnsgard The only one-volume comprehensive survey of the family Anatidae available in English, this book combines lavish illustration with the most recent information on the natural history, current distribution and status, and identification of all the species. After an introductory discussion of the ten tribes of Anatidae, separate accounts follow for each of the nearly 150 recognized species. These include scientific and vernacular names (in French, German, and Spanish as well as English), descrip- tions of the distribution of all recognized subspecies, selected weights and mea- surements, and identification criteria for both sexes and various age classes.
    [Show full text]
  • Migratory Initiative
    The CAFF Strategy Series Report No. 30 Arctic May 2019 Migratory Birds Initiative Workplan 2019-2023 The Conservation of Arctic Flora and Fauna (CAFF) is a Working Group of the Arctic Council. CAFF Designated Agencies: • Norwegian Environment Agency, Trondheim, Norway • Environment and Climate Change Canada, Ottawa, Canada • Faroese Museum of Natural History, Tórshavn, Faroe Islands (Kingdom of Denmark) • Ministry of the Environment, Helsinki, Finland • Icelandic Institute of Natural History, Reykjavik, Iceland • • Ministry of Nature and Environment, Government of Greenland • Ministry of Natural Resources and Environment of the Russian Federation, Moscow, Russia • Swedish Environmental Protection Agency, Stockholm, Sweden • United States Department of the Interior, Fish and Wildlife Service, Anchorage, Alaska CAFF Permanent Participant Organizations: • Aleut International Association (AIA) • Arctic Athabaskan Council (AAC) • Gwich’in Council International (GCI) • Inuit Circumpolar Council (ICC) • Russian Indigenous Peoples of the North (RAIPON) • Saami Council This publication should be cited as: CAFF. 2019. Arctic Migratory Birds Initiative (AMBI): Workplan 2019-2023. CAFF Strategies Series No. 30. Conservation of Arctic Flora and Fauna, Akureyri, Iceland. ISBN: 978-9935-431-79-0. Cover photo: Red knot. Photo: Morten Ekker Layout: Courtney Price More information on CAFF’s Arctic Migratory Birds Initiative (AMBI): www.caff.is/ambi For more information please contact: CAFF International Secretariat Borgir, Nordurslod 600 Akureyri, Iceland Phone: +354 462-3350 Fax: +354 462-3390 www.caff.is Facebook @CAFFS Twitter @CAFFSecretariat Instagram @caff_arctic_biodiversity This work is licensed under the Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License. To view a copy of this license, visit http:// creativecommons.org/licenses/by-nc-sa/4.0/.
    [Show full text]
  • Aerial Survey of Emperor Geese and Other Waterbirds in Southwestern Alaska, Spring 2009
    AERIAL SURVEY OF EMPEROR GEESE AND OTHER WATERBIRDS IN SOUTHWESTERN ALASKA, SPRING 2009 By Christian P. Dau1 and Edward J. Mallek2 Key Words: Aerial survey, emperor geese, waterbirds, southwest Alaska. September 2009 1U. S. Fish and Wildlife Service 2U. S. Fish and Wildlife Service Migratory Bird Management Migratory Bird Management 1011 E. Tudor Road 1412 Airport Way Anchorage, Alaska 99503 Fairbanks, Alaska 99701 AERIAL SURVEY OF EMPEROR GEESE AND OTHER WATERBIRDS IN SOUTHWESTERN ALASKA, SPRING 2009 Christian P. Dau, U.S. Fish and Wildlife Service, Migratory Bird Management, 1011 E. Tudor Road, Anchorage, AK, 99503 Edward J. Mallek, U.S. Fish and Wildlife Service, Migratory Bird Management, 1412 Airport Way, Fairbanks, AK, 99701 Abstract: The 29th consecutive spring aerial emperor goose survey was conducted from 1-3 May. The survey area is coastline and estuarine habitats from Jacksmith Bay to Wide Bay, including the north and south sides of the Alaska Peninsula. A total of 91,948 emperor geese were observed, up 41.6% from 2008 and up 43.2% from the long-term average (64,190, 1981-2008). This is the second largest count since the survey began bringing the recent 3-year average management index to 78,144 birds (up 7.2% from the previous 3-yr average of 72,864). Other species of emphasis included Pacific brant and Steller’s eider with observed populations of 82,709 and 25,841, respectively. An amphibious Cessna 206 (N234JB) was used, flown at 45m (150 feet) ASL and 200km/hr (110 kts). Key words: Aerial survey, emperor geese, waterbirds, southwest Alaska September 2009 INTRODUCTION This survey has annually monitored spring distribution, abundance and population trends of emperor geese and other waterbirds at migratory staging areas throughout southwestern Alaska since 1981.
    [Show full text]