Robert E Gill, Jr.
The movement ecology of migratory animals, especially extreme endurance migrant birds, fascinates me. Alaska migratory shorebirds have links to all hemispheres, requiring international collaborations to implement effective conservations efforts.
Through an emeritus position at the Alaska Science Center my research is focused on: 1) collaborations with an international suite of colleagues to assess the movement ecology of extreme endurance migrant shorebirds and identify the global-scale conservation issues facing their populations, and 2) releasing data to the public domain and publishing results associated with information collected during my five-decade-long tenure as a research biologist.
Professional Experience
2015 - present Scientist Emeritus USGS, Alaska Science Center, Anchorage, AK
1996 - 2015 Research Wildlife Biologist USGS, Alaska Science Center, Anchorage, AK
1993 - 1996 Wildlife Biologist NBS Alaska Science Center, Anchorage, AK
1987 - 1993 Wildlife Biologist USFWS, Alaska Fish and Wildlife Research Center, Anchorage, AK
1984 - 1987 Wildlife Biologist Denver Wildlife Research Center, Anchorage, AK
1981 - 1983 Wildlife Biologist Seattle National Fisheries Research Center, Anchorage, AK
1976 - 1980 Wildlife Biologist US Fish and Wildlife Service, Anchorage, AK
1973 - 1976 Wildlife Biologist California Department of Fish and Game, Sacramento, CA
Education and Certifications
Ph. D. 2010 - present Groningen University, The Netherlands
M.S. 1972 San Jose State University, San Jose, CA Biology
B.A. 1970 San Jose State College, San Jose, CA Wildlife Management
Affiliations and Memberships*
Alaska Shorebird Group (Founding member)
American Ornithologists' Union (Life member, Elective Member 1983, Fellow 2011)
Arctic Institute of North America (Life member)
Australasian Wader Studies Group (North American Representative, 2001-2010)
Canada Shorebird Plan (Member, Scientific Advisory Committee, 1998-2001)
Cooper Ornithological Society (Life member)
East Asian-Australasian Shorebird Working Group (U.S. representative, 2002-2007)
Global Flyway Network (Member, Scientific Advisory Board (2001-present)
International Wader Study Group (Life member; Executive Committee, 1999-2008; Editorial Advisory Board, 2012-present)
New Zealand Wader Study Group
Pacific Shorebird Migration Project (Co-PI, 2006-present)
Russian Working Group on Waders
Western Hemisphere Shorebird Group (Founding Member; Advisory Board, 2008-present)
Western Field Ornithologists (Board of Directors, 1999-2015; Assoc. Editor, 2005-present)
Western Hemisphere Shorebird Reserve Network (Chair, Scientific Advisory Board, 2004-2012)
U.S. Shorebird Conservation Plan (Chair, Research and Monitoring Group, 1998-2001)
Abstracts and Presentations
Five invited keynote, 14 invited, and >60 contributed presentations before various scientific bodies.
Science and Products
Migration, fidelity, and use of autumn staging grounds in Alaska by Cackling Canada Geese Branta canadensis minima
Brood amalgamation in the Bristle-thighed Curlew Numenius tahitiensis: process and function
Western North American shorebirds
Conservation of North Pacific shorebirds
Shorebirds in western North America: Late 1800s to late 1900s
Are Bald Eagles important predators of Emperor Geese?
Antipredator strategies in breeding Bristle-thighed Curlews
Roosting behavior of premigratory Dunlins (Calidris alpina)
Distribution, numbers, and habitat of Bristle-thighed Curlews (Numinous tahitiensis) on Rangiroa atoll
Breeding distribution of the Black Turnstone
Observations on habitat use, breeding chronology and parental care in Bristle-thighed Curlews on the Seward Peninsula, Alaska
The importance of subarctic intertidal habitats to shorebirds: A study of the central Yukon-Kuskokwim Delta, Alaska
Science and Products
- Science
- Data
- Multimedia
- Publications
Filter Total Items: 92
Migration, fidelity, and use of autumn staging grounds in Alaska by Cackling Canada Geese Branta canadensis minima
Cackling Canada Geese were studied annually (1985-88) on autumn migration staging areas in Alaska during a period of rapid population growth. Geese concentrated at two estuaries (Ugashik Bay and Cinder Lagoon) along the north side of the Alaska Peninsula. Birds arrived on the staging areas in late September, numbers peaked during mid-October, and departure occurred by late October or early NovembeAuthorsRobert E. Gill, Christopher Babcock, Colleen M. Handel, William R. Butler, Dennis G. RavelingBrood amalgamation in the Bristle-thighed Curlew Numenius tahitiensis: process and function
Alloparental care in birds generally involves nonbreeding adults that help at nests or breeding adults that help raise young in communal nests. A less often reported form involves the amalgamation of broods, where one or more adults care for young that are not their own. We observed this phenomenon among Bristle-thighed Curlew Numenius tahitiensis broods in western Alaska during 1990–1992. AmalgamAuthorsRichard B. Lanctot, Robert E. Gill, T. Lee Tibbitts, Colleen M. HandelWestern North American shorebirds
Shorebirds are a diverse group that includes oystercatchers, stilts, avocets, plovers, and sandpipers. They are familiar birds of seashores, mudflats, tundra, and other wetlands, but they also occur in deserts, high mountains, forests, and agricultural fields. Widespread loss and alteration of these habitats, especially wetlands and grasslands during the past 150 years, coupled with unregulated shAuthorsRobert E. Gill, Colleen M. Handel, Gary W. PageConservation of North Pacific shorebirds
In his introduction to the 1979 Symposium proceedings entitled “Shorebirds in Marine Environments," Frank Pitelka stressed the need for studies and conservation programs that spanned the western hemisphere (Pitelka 1979). In the 15 years since Pitelka's call to arms, the locations of many important migratory and wintering sites for shorebirds have been identified in the Americas (Senner and Howe 1AuthorsRobert E. Gill, Robert W. Butler, Pavel S. Tomkovich, Taej Mundkur, Colleen M. HandelShorebirds in western North America: Late 1800s to late 1900s
Only anecdotal information is available to assess whether populations of the 47 shorebird species that breed or winter west of the Rocky Mountains changed in size or distribution during the past century. Unregulated hunting from 1870 to 1927 reduced populations of several species, at least temporarily, and was a factor in bringing the Eskimo Curlew (Numenius borealis) close to extinction. Large scAuthorsGary W. Page, Robert E. GillAre Bald Eagles important predators of Emperor Geese?
Bald Eagles (Haliaeetus leucocephalus) and geese often occur together, especially at sites used by geese for migrational staging and wintering. Although numerous studies have been directed at these taxa, there are only anecdotal accounts (Parris et al. 1980, Bennett and Klaas 1986, Bartley 1988) of Bald Eagles killing healthy geese at any time of the year (but see Raveling and Zezulak 1991). MostAuthorsRobert E. Gill, Karen L. KincheloeAntipredator strategies in breeding Bristle-thighed Curlews
Each fall the world’s breeding population of Bristle-thighed Curlews (Numenius tahitiensis) arrives on the central Pacific wintering grounds following a migration that entails a non- stop flight of over 5000 kilometers. Sun-drenched, palm-shrouded atolls will be their home for the ensuing eight months. Even in the avian world, however, such apparent luxury is not without costs. For the Bristle-thiAuthorsBrian J. McCaffery, Robert E. GillRoosting behavior of premigratory Dunlins (Calidris alpina)
We studied roosting behavior of Dunlins (Calidris alpina) during late summer along the coast of the Yukon-Kuskokwim Delta, Alaska, in relation to tidal cycle, time of day, time of season, and occurrence of predators. Within Angyoyaravak Bay, peak populations of 70,000-100,000 Dunlins occur each year. The major diurnal roost sites were adjacent to intertidal feeding areas, provided an unobstructedAuthorsColleen M. Handel, Robert E. GillDistribution, numbers, and habitat of Bristle-thighed Curlews (Numinous tahitiensis) on Rangiroa atoll
We assessed the numbers, distribution, and habitat of Bristle-tithed Curlews (Numinous tahitiensis) on Rangiroa Atoll, Tuamotu Archipelago, during a visit in April 1988. We estimated a total of 250-350 curlews on the atoll. These birds were seen only on the southern and western rims, where they were most common on (1) saltpans within clusters of small islets and (2) narrow channels between isletsAuthorsRobert E. Gill, Roland L. RedmondBreeding distribution of the Black Turnstone
Eighty-five percent of the world population of Black Turnstones (Arenaria melanocephala) nest on the central Yukon-Kuskokwim Delta, Alaska, 65% concentrated in a narrow band of salt grass, graminoid, and dwarf shrub meadows within two km of the coast. An estimated 61,000 to 99,000 birds (95% CI), with a point estimate of 80,000 birds, breed on the central delta. About 15,000 others nest elsewhereAuthorsColleen M. Handel, Robert E. GillObservations on habitat use, breeding chronology and parental care in Bristle-thighed Curlews on the Seward Peninsula, Alaska
Results from an intensive survey in 1989 of one of the two known breeding localities of Bristle-thighed Curlews Numenius tahitiensis are reported. During the pre-nesting period birds confined most of their activity to two vegetation communities: shrub meadow tundra and low shrub/tussock tundra. During nesting more than half the Curlews seen were observed on shrub meadow tundra, whilst during broodAuthorsRobert E. Gill, Richard B. Lanctot, J.D. Mason, Colleen M. HandelThe importance of subarctic intertidal habitats to shorebirds: A study of the central Yukon-Kuskokwim Delta, Alaska
A 6-year study of shorebird use of intertidal habitats of the Yukon-Kuskokwim Delta revealed this area to be one of the premiere sites for shorebirds throughout the Holarctic and worthy of designation as a Hemispheric Shorebird Reserve in the Western Hemisphere Shorebird Reserve Network. The study area, which covered 10% (300 km2) of the delta's intertidal flats, regularly hosted 17 species of shoAuthorsRobert E. Gill, Colleen M. Handel - News
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government