We had an issue like that with one of our chickens, and it was constipation - one of the kids had taken to feeding handfuls of hard wheat berries, and it created a solid plug of partially digested grain.
We did the warm bath, etc, and then got an enema syringe from the drug store, and cleared...
Our chickens are pets (despite my desire to name them Stock, Strips and Nugget), but we wanted eggs, with a nice disposition. Australorps fit the bill - the kids love them, they are friendly, and I like their black feathers with a prism-y hint of green.
We have one hen (8 months old) that makes a somewhat similar noise - almost a rooster crowing sound. Fairly loud.
She does it in the morning, at night, and when she lays an egg.
Is her behaviour normal otherwise?
She went up into the top of the chicken ark tonight at 5pm. I went out to check on her 30 minutes later.
There were two huge golfball sized poops under her (she was in her perch). One was full of partially digested grain. Turns out one of my kids had poured out a bunch of uncracked barley, and...
Well, I was able to clear what appeared to be a blockage of her intestine - was hard, but much smaller than I thought.
I was then able to get my finger up her intestines to see if there was anything else - nothing.
We then gave her a mineral-oil enema, and put castor oil in their water.
After...
We have three austrolorps (about 8 months old).
One of the chickens started making noise last night, at a time when she should have been sleeping. We checked her out - she seemed fine.
The next day, her poop was watery, and she seemed to be straining.
Our first thought was a bound egg, so...