my oats didn't cause this, as i barely feed the chicks...
actually, a closer look shows this gosling, of all his siblings (11 total), to be slightly deformed. his head is larger than his nest mates, and it is stretched up. it looks like a photoshop transform stretch on a picture or 3d object or something. his breast muscle, the muscular area at the front of the chest that the neck goes into, is super developed, it protrudes out, his neck is thicker than his nestmates, perhaps he has developed strong muscle because of his ackward neck problem. He has trouble reaching to get stuff at some angles, but now I see he can reach the grass if he tries. He is the same body size as his nestmates, has survived this long. he does not look the same as them, though.
they are all like 2 months old at least, about to lose all their grey fuzz and transition to solid black on the neck and head. I can see their white and black cheek patches coming in good. perhaps he has more fuzz than them as well at this stage, but same body size.
anyways I will get some vitamins poly vi sol or something and give them to him. I seriously spooked his whole family today trying to touch him today... If I could get him to hand feed I could make sure he is ok and give him some food make sure he eats.
my understanding is that if you report an injured goose to any state local or federal government official, or even the spca, there is a 50% chance they will put it down if the problem is serious.