Red Knots Calidris canutus roselaari occur along the Pacific coast of the Americas and may use as... more Red Knots Calidris canutus roselaari occur along the Pacific coast of the Americas and may use as few as four stopover or staging sites during spring migration. There are key information gaps regarding this population’s status and non-breeding distribution because of its localized distribution during migration, relatively small population size (estimated population of 17,000) and a poor understanding of the location of major overwintering sites. Based on resightings of marked birds, we assessed migratory connectivity of Red Knots along the Pacific coast. Knots captured and marked at two sites in NW Mexico have been observed at several locations, including migration areas in coastal Washington and the Yukon-Kuskokwim Delta in W Alaska and breeding areas in NW Alaska. The greatest connectivity was between Guerrero Negro/Ojo de Liebre and Golfo de Santa Clara, Mexico, and during northbound migration, between those two sites and coastal Washington, USA. Much less is known about the sout...
Red Knots Calidris canutus that migrate along the Pacific Flyway during spring are believed to be... more Red Knots Calidris canutus that migrate along the Pacific Flyway during spring are believed to belong to the roselaari subspecies, and in coastal Washington, USA, these knots aggregate in numbers not exceeded elsewhere in the flyway south of Alaska. In May 2010, as part of a continuing effort to investigate knot migration, including an effort to develop an estimate of abundance, we searched the northern areas of Grays Harbor and Willapa Bay, Washington, from airboats for flagged Red Knots originating from Baja California Sur, Mexico. We observed Red Knots roosting on sand or dredge-spoil islands, on estuarine shorelines, and at primary foraging areas. Red Knots were observed roosting primarily at shoreline and island locations, including sites that would not be available to them during extreme high tides or during storm events. The peak abundance of Red Knots occurred on 8 May, when 5,665 were in Grays Harbor and 1,314 in Willapa Bay. We documented 157 individually-marked Red Knots ...
Red Knots Calidris canutus roselaari occur along the Pacific coast of the Americas and may use as... more Red Knots Calidris canutus roselaari occur along the Pacific coast of the Americas and may use as few as four stopover or staging sites during spring migration. There are key information gaps regarding this population’s status and non-breeding distribution because of its localized distribution during migration, relatively small population size (estimated population of 17,000) and a poor understanding of the location of major overwintering sites. Based on resightings of marked birds, we assessed migratory connectivity of Red Knots along the Pacific coast. Knots captured and marked at two sites in NW Mexico have been observed at several locations, including migration areas in coastal Washington and the Yukon-Kuskokwim Delta in W Alaska and breeding areas in NW Alaska. The greatest connectivity was between Guerrero Negro/Ojo de Liebre and Golfo de Santa Clara, Mexico, and during northbound migration, between those two sites and coastal Washington, USA. Much less is known about the sout...
Red Knots Calidris canutus that migrate along the Pacific Flyway during spring are believed to be... more Red Knots Calidris canutus that migrate along the Pacific Flyway during spring are believed to belong to the roselaari subspecies, and in coastal Washington, USA, these knots aggregate in numbers not exceeded elsewhere in the flyway south of Alaska. In May 2010, as part of a continuing effort to investigate knot migration, including an effort to develop an estimate of abundance, we searched the northern areas of Grays Harbor and Willapa Bay, Washington, from airboats for flagged Red Knots originating from Baja California Sur, Mexico. We observed Red Knots roosting on sand or dredge-spoil islands, on estuarine shorelines, and at primary foraging areas. Red Knots were observed roosting primarily at shoreline and island locations, including sites that would not be available to them during extreme high tides or during storm events. The peak abundance of Red Knots occurred on 8 May, when 5,665 were in Grays Harbor and 1,314 in Willapa Bay. We documented 157 individually-marked Red Knots ...
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