Today, 09MAY, around noon, I found a drake Blue-Winged Teal in one of the small ponds close 65th AVE as you approach the boat launch parking lot.
A photo may be viewed here:
http://www.flickr.com/photos/crappywildlifephotography/7166756978/

Also, Hammond's Flycatcher, Warbling and Hutton's Vireo, Yellow, Wilson's, Orange-crowned, and Yellow-rumped warblers were seen around the park.

Rick Hibpshman
Issaquah, WA