Records of white-rumped sandpiper (Calidris fuscicollis) on the South Shetland Islands

摘要

A programme to monitor non-breeding bird species in the vicinity of Arctowski Station, King George Island, South Shetlands, Antarctica, has been conducted over the past 30 years. The white-rumped sandpiper Calidris fuscicollis (Vieillot 1819) seems to occur now as a vagrant in South Shetlands area more frequently than previously. This trend, and the annual variation in numbers that have been observed could be a result of short term and longer term variation in weather and climate conditions during the austral spring and summer months when this species is observed. A higher air temperature, which is a result of predominant northern winds bringing relatively warm and moist air, would probably result in more open habitats and better food resources that would allow the birds to persist or survive.