CHARLESTON, S.C. (AP) — Ruby-throated hummingbirds are arriving in North America each spring several weeks earlier than in the past, and research indicates that higher temperatures in their winter habitat may be the reason.
News - Boston.com, Boston Globe
Sun, 02/17/2013 - 11:29am
CHARLESTON, S.C. (AP) — Ruby-throated hummingbirds are arriving in North America each spring several weeks earlier than in the past, and research indicates that higher temperatures in their winter habitat may be the reason.