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This data package includes two child items with data from Pacific Black Brant (Branta bernicla nigricans) during winter and migration periods. Child Item One: "Body mass, Morphological Measurements, Flock Counts, and Age-Ratios from Black Brant Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico". The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. Child Item Two: "Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico". Data from brant tagged with VHF radio transmitters in July 1999 on...
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This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package provides data from Pacific Black Brant (Branta bernicla nigricans) tagged with VHF radio transmitters in July 1999 on the Yukon Kuskokwim Delta, Alaska and detected in the following two years during their annual migration. Data include: 1) one table with attributes of the tagged brant, 2) one table with estimated dates of migration events, and 3) seven tables of detection data from radio tracking scans at coastal sites between Alaska and Mexico. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0)
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This data package presents legacy data on Emperor Goose, Cackling Goose, Black Brant, and Greater White-fronted Goose, breeding biology, behavior, and morphology collected at study sites near Kokechik Bay on the Yukon Delta National Wildlife Refuge (previously Clarence Rhodes National Wildlife Refuge), Alaska during the summers of 1982 through 1988. These data were collected to provide a basis for the evaluation of long-term changes in Emperor Goose and other waterfowl biology on the Yukon-Kuskokwim Delta, Alaska.
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This dataset identifies lead (Pb) concentration found in the blood of waterfowl sampled in western and northern Alaska and eastern Russia between 1993 and 2022. Data include age, sex, body measurement, capture location, presence or absence of lead shot on x-rays, and blood lead levels. Because the study took place over a number of years at the same study sites, many of the same birds were sampled in multiple years.
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A trichotomous choice survey was used to document local expert observations of five berry species locally known as: salmonberry (Rubus chamaemorus), blackberry (Empetrum nigrum), cranberry (Vaccinium vitis-idaea), blueberry (Vaccinium uliginosum), and red berry (Rubus arcticus). The survey consisted of propositions concerning importance of specific berry species within Indigenous households; observations of changes in berry abundance, phenology, habitat, or availability; attribution of potential drivers of change; and instance of changes in behavior in response to changing berry resources. Respondents were asked to agree (yes) or disagree (no) with propositions or state that they were unsure of an answer (don’t...


    map background search result map search result map Results from local knowledge of berry resources surveys administered to community experts in four villages of the Yukon-Kuskokwim Delta, Alaska Waterfowl Lead Exposure Data in Alaska and Russia Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico Breeding Biology, Behavior, and Morphology of Emperor Geese and Other Waterfowl near Kokechik Bay, Yukon Delta National Wildlife Refuge, Alaska during 1982-1988 Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico Nesting Period Data for Black Brant (Branta bernicla nigricans) in Alaska Tracking Data for Black Brant (Branta bernicla nigricans) Breeding Biology, Behavior, and Morphology of Emperor Geese and Other Waterfowl near Kokechik Bay, Yukon Delta National Wildlife Refuge, Alaska during 1982-1988 Results from local knowledge of berry resources surveys administered to community experts in four villages of the Yukon-Kuskokwim Delta, Alaska Nesting Period Data for Black Brant (Branta bernicla nigricans) in Alaska Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico Waterfowl Lead Exposure Data in Alaska and Russia Tracking Data for Black Brant (Branta bernicla nigricans)