This is one three species of warbler that I photographed recently. It is easy to see where the Black-throated Green gets its name. This particular individual has a nickname: Stubby.
Yes, he is missing his tail feathers as is really obvious in the next picture. Research says the most likely cause is a close encounter with a predator. He was very active in his foraging so the only issue is a little loss of maneuverability. No worries though. Stubby should have a new set of feathers in a month or two. He just needs to keep an eye out for hawks!
Birds in My Viewfinder 