Warbling Vireo at Pismo State Beach Campground, Oceano, CA on April 12, 2009.DSLRscoped using a Canon EOS 350D, Zeiss Diascope 85 T FL, Zeiss camera adapter, Canon remote switch.
A Bell's Vireo (Vireo bellii) sings to the object of his affections one Spring day at Peck's Lake [Arizona]. This song is sung over and over, using the two phrases heard here. The first phrase sounds like "I wonder who's kissing her now" (not the song, just the words) to me.