New Scientist 新科學家週刊 07 April 2007
可能由於全球暖化，西伯利亞Wrangel 島的冰雪提早融解，雪雁因此可以大批繁殖。
到訪美國華盛頓州的雪雁在十年間倍增至83,000 隻，吃掉不少牧草，影響到當地的畜牧業。
Snow goose invasion points to Arctic thaw
IN FEBRUARY, birders from across Washington state flocked to the town of Stanwood, population 5068, for the area's second annual Snow Goose Festival. Set up to boost the local economy, events this year included a pancake breakfast, birdwatching tours, wine tasting and live music from a local bluegrass band.
For festival organiser Laura Byers, the big attraction is the sheer number of geese that come to call at Stanwood - a number that has skyrocketed in recent years. "The fields are white with them," she says. But the booming population is not universally welcome, and may in fact be a stark warning of trouble brewing elsewhere: global warming.
