Bell's Vireo (Vireo bellii), Fort Lowell Park, Pima County

This Bell's Vireo was discovered by Philip Kline on 02 December 2009 and photographed by Philip on 05 February 2010.

Bell's Vireo winters from Central Sonora, Mexico south and is accidental in winter in Arizona. 

Drab overall features with gray head, dull olive back and light yellow wash on the flanks, combined with bill shape and broken eye ring identify it as a Bell's Vireo

05 February 2010, photo by Philip Kline