She and one of my golden comets are also singing this mournful song in the morning. I understand that this is a kind of pre-egg song. They made the same sound when they were out of feed, LOL. I haven't checked to see if they are doing the squatting thing. I'll have to check that tomorrow.
BTW, my leghorns are about 16 weeks and the comets 15 weeks. I chose those breeds because I read that they were prolific egg layers and early layers as well.
DH says those better be some darn good eggs!!!