Boo-Boo's Mama :
I've read that what looks like yawning (gagging) might be them rearranging things in the crop. FWIW
Really? Interesting.....I was actually thinking somewhere along those lines, but didn't think that was actually what was going on!
Hi Ellen and
I don't know of any studies about that behavior, but from personal observation, I have a few theories. Don't worry though: it is perfectly normal and doesn't indicate that the chicken is sick.
There are two kinds of 'yawns' that I know of: the one you're describing, and a sort of...