Tracking Data for Red-throated Loons (Gavia stellata)

Science Center Objects

Available here are tracking data of Red-throated Loons, a species that breeds in coastal areas throughout Alaska and winters along the Pacific coasts of North America and Eurasia. These data were collected to better understand the patterns of migratory movements and seasonal use of different regions of Alaska.

Return to Ecosystems >> Wildlife Tracking Data Collection

USGS Alaska Science Center scientists collect 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, and identify geographic areas repeatedly used by wildlife that may indicate sites of importance to species and populations. Tracking data from other wildlife species can be found at:

Argos Wildlife Tracking Red-throated Loons

Argos Wildlife Tracking of Red-throated Loons.
(Credit: David Douglas, USGS. Public domain.)

Tracking Maps

Red-throated Loon Tracking Maps

These webpages contain four different types of browse maps and other visualizations of the tracking data.

  • Maps (Animated, Static, Interactive, and Google Earth)
  • Summary graphs of the data: where, when, duration
  • Note: These maps serve only as a depiction of the geographic content of the specific data provided and may be inappropriate for inferences and interpretation outside the intent of the original study. For example, maps may portray only certain ages, sexes, limited numbers of animals or variable tracking duration and start times that may limit inference for other questions. Users are advised to read the publication(s) and data set metadata associated with these maps to understand appropriate use and data limitations.

Data Packages

Argos Satellite Telemetry Data

These data packages contain the data collected from satellite transmitters attached to free-ranging animals. The packages include both raw and processed location and sensor data. The raw data includes data as originally retrieved from the Argos System. The processed data have been filtered for location plausibility, and sensor data have been decoded into standard measurement units. For most users, the processed data will be preferred.

Suggested Citation

Uher-Koch, B.D., Schmutz, J.A., and Douglas, D.C., 2017, Tracking data for Red-throated Loons (Gavia stellata) (ver 2.0, February 2020): U.S. Geological Survey data release,

Version History
First release: December 2017
February 2020 (ver. 2.0)