A Cassin's Vireo Vireo cassinii at the Halff Brothers Ranch, Frio County, Texas on December 26, 2005; A Cassin's Vireo wintered at this site a year ago (no photos then, but seen by many birders, including Paul Lehman), and it was briefly joined by a second bird - could this be a returning bird from last winter?:
This is a flash photo, so the colors look a bit different:
Pics below are by Willie Sekula: