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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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Bald eagle research - Chilkat River eagle migration study
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.