My five month old BLM was intro to live pigeons yesterday by yours truly. I have had pup for about a month now and have been doing puppy work "forming" him obedience wise and attempting to give him all around manners. We have been retrieving bumpers with him on a rope in the hallways of my house and in the yard. Every once and a while he gets a little possessive but I wrangle him in ad give him plenty of praise. Yesterday during intro to live birds he was pretty amped up about a flopping bird in his face. I toss bird. He runs after and proceeds to nip at its flanks under the wings and bark. After third toss he finally puts bird in his mouth and I pull him in with the rope giving plenty of praise. Today I do the same. Live bird toss. Dog chases and today just nips and nips and plenty of barking. I pull him away when this happens to end that behavior but do not know how to correct to where he want to pick up bird. BTW pup has all of his adult teeth so teething isn't an issue to my knowledge. Any help would be greatly appreciated in this matter.