Electric collar strikes again! The gift that keeps on giving. You have managed to convince the dog that picking it up is likely going to bring retribution. Every young dog I have ever had takes off the wrong way with the prize, particularily in the presence of other dogs, who might take it away from him. Which is why you expose the dog to live birds in a training enviornment you can control, rather than the heat of battle opening morning. Might try a process of having the dog hold a dead warm bird, even if you have to help him hold it because he is reluctant. Praise lavishly, take it gently from him, give it back, praise lavishly, throw a short distance, encourage retrieve, if he won't, go out and pick it up and place it in his mouth, and praise lavishly, walk at heal back to where you threw it from, hopefully he holds it. Sit him and take the bird upon release, give back, take again, praise lavishly. if he learns that picking up and holding, and bringing to you earns praise, your on your way. You may never get there at 6. next time skip the collar, use praise and cajoling, walking away and calling, to get the pup to come back with the bird, when he's in range, get a hold of him and praise him up, don't take the bird right away, let him hold it, soon enough he'll be ready to let go and continue on. Refusal to retrieve feathered game usually manifests itself with doves, or woodcock, small loose feathers that come out easy and clog the mouth.This is man caused aversion, or blinking, due to bad handling. The dog avoids feathers, so as not to set up another incident to get the buzzer. Smart dog, but doesn't know why he got buzzed but he remembers the time , place, and circustances!