Today, 12MAY11, I found at least 4 Yellow Warblers with the yellow-rumped warblers, and an orange-crowned warbler around the ponds in the new wetlands at Magnuson Park. The first Yellow Warblers I've seen this spring.
A photograph can be found here:
http://www.flickr.com/photos/crappywildlifephotography/5713561965/

Rick Hibpshman
Issaquah, WA