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Rachel Wheat, a graduate student at the University of California Santa Cruz holds one of the solar-powered GPS satellite transmitters (also known as a PTT - platform transmitter terminal) that will be attached to the backs of bald eagles in her bald eagle migration study. The 2.47 ounce transmitter, attached with a lightweight harness, will allow Wheat to see how closely eagles track salmon availability across time and space. The transmitter will record location and other information every hour during daylight hours. That information is uploaded to the ARGOS satellite system into a database where the information can be downloaded for mapping and further study. The eagles in her study were trapped, measured, banded, and then released with the transmitters in the Alaska Chilkat Bald Eagle Preserve near Haines. During late fall, bald eagles congregate along the Chilkat River to feed on salmon. This gathering of bald eagles in the Alaska Chilkat Bald Eagle Preserve is believed to be one of the largest gatherings of bald eagles in the world.
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- © 2013 John L. Dengler
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ARGOS ARGOS satellite system Alaska Alaska Chilkat Bald Eagle Preserve Alaska Department of Natural Resources Alaska State Parks America Argos PTT BAEA Bald Eagle Council Grounds CLSAmerica Chilkat Bald Eagle Preserve Chilkat River Chilkat River Bald Eagle Preserve Department of the Interior Haines Haliaeetus leucocephalus Klukwan Microwave Telemetry Microwave Telemetry Inc. North America PTT PTT-100 70 gram Argos/GPS Solar Powered PTT Platform Transmitting Terminal Solar Argos/GPS PTT U.S. U.S. Fish & Wildlife Service U.S. Fish and Wildlife Service US USA USFWS United States United States of America animal animals aves avian bald eagle bird bird of prey birds birds of prey data logger data pusher eagle eagles fauna gps tag gps transmitter horizontal nature one person outdoor research outdoors protected land raptors research research equipment satellite telemetry satellite transmitter solar-powered satellite gps transmitter southeast Alaska wildlife