Peregrines lay first egg on Seattle skyscraper

The peregrine falcons nesting at the 56th floor of the Washington Mutual Tower in Seattle have laid their first egg of the season. The pair could be the same couple that were there last year -- and lost all their chicks to disease -- but observers can't be certain, because the falcons are not wearing bands. The Falcon Research Group has a webcam trained on the nest. (It's hard to see much on a sunny morning.) Peregrine falcons have been nesting on the downtown building since 1994. For more details about urban falcons, here's a story I wrote about them.