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

This Tennessee Warbler was discovered on 28 Nov 2010 by Mark Stevenson and was photographed by Andrew Core on 01 December 2010.

The last couple of years have been better than the recent norm for this species in the state, with multiple birds being documented in both 2008 & 2009. Arizona saw a significant drop-off in reports of this vagrant in the 1990's and early 2000's compared to the relatively numerous reports in the state from the 1970's and 1980's. This is at least the sixth Tennessee Warbler documented at Sweetwater since 2008.

Note the long white undertail coverts, short tail and unstreaked underparts which separate this species from Orange-crowned Warbler. Light supercillium and dark eyeline and single wing bar are supporting marks.

01 December 2010, photo by Andrew Core