Bird Species Checklists from USGS Alaska Science Center Field Camps: Southwest Alaska

These data are daily summary checklists of all bird species observed at U.S. Geological Survey, Alaska Science Center (ASC) field camps in Southwest Alaska. Data include species observation details such as observers, dates, location, and number of individuals seen. Included are data from three camps along the Alaska Peninsula, in and around Izembek National Wildlife Refuge ("Izembek NWR", "Cold Bay", and "Neumann Island") during field seasons: 1986-1993.

Tags: Alaska, Albatrosses/Petrels and Allies, Animals/Vertebrates, Biota, Birds, All tags... Coastal ecosystems, Cold Bay, Cranes, Ducks/Geese/Swans, Eagles/Falcons/Hawks and Allies, Environment, Fowl, Game birds, Izembek National Wildlife Refuge, Loons, Migration (organisms), Migratory birds, Migratory rates/routes, Migratory species, Neumann Island, Owls, Perching Birds, Raptors, Sandpipers, Seabirds, Seasonal distribution, Shorebirds, Songbirds, Tundra ecosystems, USGS:ASC436, United States, Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Fewer tags

Aerial Photo Imagery from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019

The imagery and annotations presented here were generated while testing an aerial photographic survey design to improve repeatability, transparency, and estimation of variance for annual population estimates of geese staging at Izembek Lagoon, Alaska. This dataset includes 1) 131,031 .JPG images captured from a small fixed-wing occupied aircraft, usually at an altitude of about 457 m, over Izembek Lagoon; 2) annotations of objects (geese, ducks, and gulls) assigned by an automated algorithm, and 3) manually corrected annotations that were edited by project staff for only those photos automatically identified as containing geese of any species. The photos were captured at predetermined points to systematically sample...

Tags: Aerial photography, Aerial surveys, Alaska, Alaska Peninsula, Animals/Vertebrates, All tags... Anser canagicus, Aquatic ecosystems, Biota, Birds, Branta bernicla, Branta hutchinsii, Coastal ecosystems, Ducks/Geese/Swans, Environment, Estuarine habitat, Image collections, Izembek Lagoon, Izembek National Wildlife Refuge, Migratory birds, Migratory species, Photography, Population dynamics, Relative abundance analysis, Tundra ecosystems, USGS:ASC449, Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Fewer tags

Data and Model-Based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska

These data are in two tables relating to fall age ratios (number of juvenile birds : total birds aged) of Black Brant (Branta bernicla nigricans) staging in Izembek Lagoon, Alaska, since 1963. The first table is observation data for the age classes of Black Brant during surveys, and associated survey characteristics. The second table contains model-based estimates of age ratios by year along with Standard Error (SE), and 95% Bayesian credible intervals around estimates.

Tags: Alaska, Animal populations, Animals/Vertebrates, Biota, Birds, All tags... Black Brant, Brent Goose, Computational methods, Ecological dynamics, Environment, Izembek Lagoon, Izembek National Wildlife Refuge, Mathematical modeling, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS:ASC256, Waterfowl, Wildlife biology, Fewer tags

Molecular Detection and Characterization of Highly Pathogenic H5N1 Avian Influenza Viruses in Wild Birds Inhabiting Western Alaska Provides Evidence for Three Independent Viral Introductions

This data set describes three independent viral introductions of Highly pathogenic H5N1 avian influenza viruses into Alaska.

Tags: Alaska, Animals/Vertebrates, Avian influenza, Biota, Birds, All tags... Disease detection, Disease reservoirs, Disease spread, Ducks/Geese/Swans, Environment, Gulls, Health, Health and disease, Influenza A virus, H5N1 subtype, Izembek National Wildlife Refuge, Lagoons, Lakes/Reservoirs, Migratory birds, USGS:ASC570, Virus Diseases, Viruses, Waders/Gulls/Auks and Allies, Waterfowl, Wildlife, Wildlife disease, Fewer tags