Observations of Red Knots Calidris canutus at Old Chevak, y ukon-Kuskokwim Delta, Alaska, spring 2008
167 – 170
1 December 08
Brian J. McCaffery, Jan van de Kam, Keith Woodley
Brian J. McCaffery
U.S. Fish and Wildlife Service, Yukon Delta National Wildlife Refuge, PO Box 346, Bethel, Alaska, 99559, USA.
We report our observations of Red Knots during spring migration at Old Chevak, 20 km inland from the coast on the central Yukon-Kuskokwim Delta. Migrant Red Knots were detected over a three-week period in May, a period that coincided with both snow-melt and river ice break-up. Among our 1,178 observations were three knots color-marked in Mexico. Knots foraged primarily in three habitats: riparian sedge meadows, tidal marshes, and rotting river ice. Our observations indicated that hundreds, and perhaps thousands, of knots use areas inland from the immediate coast of the Yukon-Kuskokwim Delta during spring migration. Spatio–temporal variation in habitat availability during the migration period will make population assessments challenging.