Well, folks, we have found the crowing culprit. We embarked on our campaign to find the crower last night. After the chicks went to sleep, I sneaked out to the coop and chick-napped Audrey, the partridge with the suspiciously erect tail. The chicks sleepily complained a little as I nabbed one of their compatriots, but they were not sufficiently awake to put up much of a fuss.
I carried Audrey to the solitary confinement chamber (aka the old old brooder box) that I had prepared in the garage. She peeped a little on the way to garage, calling for her sisters. Once I put her in the brooder box, she must have fallen back to sleep very quickly, because I did not hear anything from the garage other than the crickets.
This morning, I got up very early to listen at the garage door. Nothing. I tiptoed in to the garage to take a peek. Audrey sat there quietly. I wondered if the cricket commotion might be intimidating her and keeping her quiet. But I can't do anything about the crickets in the garage. I felt terrible for imprisoning Audrey, but it had to be done.
Eventually, I got impatient, and stepped out onto the patio to listen for noises from the coop. I wasn't sure if the residents there were up and about yet, and was about to go closer to take a look, when....
COCK A DOODLE DOOOOO!
...came from the coop. I ran over to see if I could figure out who it was. Ally was standing there, with Melanie and Lily settled in the dust by her feet. Ally looked straight at me, opened her beak, and said,
"COCK A DOODLE DO!" Again. Right to my face.
"Aha!" I said. "Caught you!"
So we have our culprit, caught him red crowed, so to speak. I went to the garage to release Audrey back into the general population. She was very happy to be back with her friends. We are keeping an eye on them all for any further rooster behavior, but Ally will have to find another home in the next day or two.