I have a 7 week old gosling, almost fully feathered. His beak and legs are pale, pinkish rather than orange. He has been in a coop with pullets, under a heat lamp. 2 days ago, he seemed to be having problems getting around. Yesterday, he couldn't stand up. I now have him in a box in the kitchen, next to the wood stove. He's not eating and only drank a little bit. We gave him some grass and hay to nibble, but isn't interested. I gave him fish oil caps (pierced and squeezed into his beak). I even tried some alfalfa pellets (rabbit pellets), thinking he might need "grazing". Any suggestions????