Yew Lake is a fantastic place to bird in Vancouver during the summer months. The access is phenomenal and you are in the high altitude habitats looking at birds that are not usually found save the migration. Townsend's warblers are usually flitting around the tops of the evergreens but this one was lower and hunting in and around the blueberries lower shrubs. I have always thought they look like Prairie warblers but in fact are more closely related to the Hermit warbler.