Click To Play play_blip_movie_257666();Cliff Swallow Nests on blip.tv Cliff Swallows (Petrochelidon pyrrhonota) have built a number of nests at the Baylands Nature Preserve visitor center in Palo Alto, California. Here's a still image of the nest on Flickr, and one of a baby who didn't make it. Download: MPEG4 Video (.mp4)