Tennessee Warbler (Vermivora peregrina), Sweetwater Wetlands, Pima County

This Tennessee Warbler was discovered by Jerry Bock on 30 October 2008 at the Sweetwater Wetlands in Tucson.  It was photographed by Tyler Loomis on 11 November 2008

Tennessee Warbler was one of the more common of the eastern vagrant warblers prior to 1990 with over a hundred reports.  It was even removed from the review list for a time.  Like many other northerly breeding warblers, it has become much rarer recently and was put back on the review list.  There are fewer than 10 accepted records since 2000. 

Note the whitish undertail coverts, short tail and lack of streaking which separate this species from Orange-crowned Warbler.  The suggestion of streaks in the second picture appears to be just ruffled feathers. 

11 November 2008, photo by Tyler Loomis