Accession Number:

ADA285236

Title:

The Behavior and Ecology of Fall Peregrine Falcons at Lummi Bay and Vicinity, Whatcom County, Washington

Descriptive Note:

Study rept.

Corporate Author:

CORPS OF ENGINEERS SEATTLE WA SEATTLE DISTRICT

Report Date:

1984-01-01

Pagination or Media Count:

70.0

Abstract:

The behavior and ecology of Peregrine-Falcons were studied at Lummi Bay, Whatcom County, Washington, from October through December, 1983. Peregrines were observed 207 times on 80 of the field days. We identified a minimum of 15 individual falcons during the study. The main peregrine activity was centered in and around Lummi Bay. Habitat preferred by the dominant adult female included a wooded ridge, tidal mudflats, and level agricultural fields. Combined observations yielded 154 hours and 46 minutes of direct study of peregrine behavior falcons were perched 84 of that time, in flight 16. Forty two prey items, primarily ducks and shorebirds, were recovered. Peregrines were successful hunters 22 of the time 153 hunting flights were witnessed. An adult female was radio-tagged on 1 December and followed over the next 30 days. She roosted in the San Juan Islands, 11 miles southwest of the main study area.

Subject Categories:

  • Ecology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE