I'm a newbie and I have a hen that opens her mouth and sticks out her neck, also. I assumed it was a "crop drop" as they call it in bald eagles. She seems fine otherwise.
Last week we put our 9 week old chickens(4 of them) and 6 week old duck in their new coop. Instead of the chickens sleeping on the roosting bar they sleep in a box with the duck on the ground, all snuggled together. I know they know how to use the bar because I had a smaller one in their old...
