Hidden in the Shade

A little yellow chunk just shot across in front of me.  Who?

It was a male Wilson's Warbler,  a summer visitor.

"I just don't want to be seen."

"I have to check every nook and cranny for 

a bug.  I am a bug-loving bird."

"Swiftly onto another branch.  If you see a very bright 

yellow color in the bush, it could be me."