We had these birds in a tree by our house - My wife took these photos on Sat 5-28-11 / we believe these maybe a Western Tanager - I think we counted a dozen birds

Overview

http://identify.whatbird.com/obj/196/_/Western_Tanager.aspx
Western Tanager: Medium-sized tanager with brilliant red head, bright yellow body, black back, wings, and tail. Wings have two bars: upper bar is yellow, lower bar is white. Legs and feet are gray. Swift direct flight on rapidly beating wings. It was first recorded on the Lewis and Clark expedition.

Range and Habitat

Western Tanager: Breeds from southern Alaska and Mackenzie southward and winters in the tropics. Preferred habitats include open coniferous forests.