Found Pigeon with injury please help diagnose

[gseaquest]

I found a pigeon this evening. It was drinking out of my flower pot. I though that it must be tame because it did not try to really fly away. I decide that I was going to handle it and upon picking it up i found that it could not fly. The long feathers that make up the tip of the wing on one side were missing. Whenever the bird tried to fly it acted like it could not get the wing back up against its side. It kind of just stayed up. Could the wing be possibly clipped or maybe broken. Upon examining the rest of the bird everything looks good. This bird is just missing those feathers on its right side. The rest of the wing is in good shape. Please Help.