Light-Level Geolocator Tracking Data for Black Brant (Branta bernicla nigricans)

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This data package contains all location data collected by light-level geolocators attached to 68 Black Brant at breeding areas in Alaska. The data include: a deployment attributes file with details of each brant at the time of capture, the raw light-level data in ASCII files as downloaded and decompressed, and twice-daily estimated locations.

Tracking Data for Black Scoters (Melanitta americana)

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This data release includes 2 child items with tracking data for Black Scoters, a sea duck species that breeds throughout higher latitudes of Alaska and Canada and winters along coastal areas of North America. Child Item 1: "Argos Satellite Tracking Data for Black Scoters (Melanitta americana) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Black Scoters (Melanitta americana) - Raw Data" -- All raw data collected from Argos satellite transmitters, provided for completeness of the archive. The quality-controlled, "Argos Processed Data" (Child Item 1) are better suited for most analytical purposes.

Tracking Data for Whimbrels (Numenius phaeopus)

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This data release includes 2 child items with tracking data for Whimbrels, a shorebird found throughout tundra and boreal habitats of Alaska during the summer and winters along the coasts of the continental U.S., and central and South America. Child Item 1: "Argos Satellite Tracking Data for Whimbrels (Numenius phaeopus) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Whimbrels (Numenius phaeopus) - Raw Data" -- All raw data collected from Argos satellite transmitters, provided for completeness of the archive. The quality-controlled, "Argos Processed Data" (Child Item 1) are better suited for most analytical purposes.

USGS Alaska Science Center Wildlife Tracking Data Collection

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Understanding the short- and long-distance movements of wildlife is critical for a wide variety of ecological research studies and management decisions. Since the mid-1980s, the USGS Alaska Science Center has collected data from wildlife tracking devices to: determine locations of animals throughout their annual cycles, understand patterns of habitat use, quantify time spent on various behaviors, determine timing of life cycle events, and identify geographic areas repeatedly used by wildlife that may be of significance to other species and populations. These datasets are a collection of the USGS Alaska Science Center wildlife tracking data arranged by species or closely allied species groups. Details of tracking projects, devices, methods, and data can be found within each species directory.

Tracking Data for Yellow-billed Loons (Gavia adamsii)

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This data release includes 2 child items with tracking data for Yellow-billed loons, a species that breeds in coastal areas of western and northern Alaska and adjacent regions of Russia and Canada. This species winters along the Pacific coasts of North America and Eurasia. Child Item 1: "Argos Satellite Tracking Data for Yellow-billed Loons (Gavia adamsii) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Yellow-billed Loons (Gavia adamsii) - Raw Data" -- All raw data collected from Argos satellite transmitters, provided for completeness of the archive. The quality-controlled, "Argos Processed Data" (Child Item 1) are better suited for most analytical purposes.

Nesting Period Data for Black Brant (Branta bernicla nigricans) in Alaska

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This data package contains one table with nest initiation and end dates and clutch sizes from Black Brant (Branta bernicla nigricans) at two breeding colonies in Alaska. Data include nesting period determined by either nest visits or light-level data recorded by geolocators attached tarsal bands.

Tracking Data for Greater White-Fronted Geese (Anser albifrons)

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This data release includes 1 child item with tracking data for Greater White-fronted Geese, a species that nests in coastal areas of western and northern Alaska and winters across a broad area of North America along the Pacific and Central flyways. Child Item 1: "VHF Tracking Data for Pacific Flyway Greater White-Fronted Geese (Anser albifrons), 1987-1991" -- VHF tracking data for Greater White-fronted Geese marked annually (1987-1991) in Alaska and the Klamath Basin (Oregon and California) and subsequently tracked through the Pacific Flyway (primarily in Alaska, California, and Mexico).

Tracking Data for Pacific Loons (Gavia pacifica)

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This data release includes 1 child item with tracking data for Pacific Loons, a species that breeds throughout much of Alaska and winters throughout the Pacific Ocean basin, along the coasts of East Asia and North America. Child Item 1: "Argos Satellite Tracking Data for Pacific Loons (Gavia pacifica) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters.

VHF Triangulation Tracking Data for Black Brant (Branta bernicla nigricans) in Waters Adjacent to Izembek National Wildlife Refuge, Alaska

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This data package contains estimated location data from triangulation tracking of VHF transmitters on 93 Black Brant at Izembek National Wildlife Refuge, Alaska, during fall 1987-1990. The transmitters were attached to second year and older Brant on breeding colonies in Alaska, northwestern Canada, and northeastern Russia. The data include: a deployment attributes file with details of each brant at the time of capture, the raw bearing data, and location estimates from triangulation.

Tracking Data for Common Eiders (Somateria mollissima)

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This data release includes 2 child items with tracking data for Common Eiders, a sea duck species found across Alaska and the Arctic. Some populations migrate between distant breeding and wintering areas while others are essentially nonmigratory. Child Item 1: "Argos Satellite Tracking Data for Common Eiders (Somateria mollissima) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Common Eiders (Somateria mollissima) - Raw Data" -- All raw data collected from Argos satellite transmitters, provided for completeness of the archive. The quality-controlled, "Argos Processed Data" (Child Item 1) are better suited for most analytical purposes.