Agapornis roseicollis By Matt Young September 6, 2010 12:00 MST Photograph by Pete Moulton. Photography contest, Honorable Mention. Agapornis roseicollis – Rosy-faced Lovebirds. A. roseicollis have established a large and growing feral population in the Phoenix metro area. The Sonoran desert habitats serve them very well, and they’re thriving on a diet composed largely of mesquite beans and nesting in cavities in the saguaros or in the spaces under roof tiles.