My biggest Australorp squalks a lot when someone is in "her" nest box. when she walks into the coop and it is occupied she stands in the doorway screaming, hard to tell why that is an issue since the boxes are same size, just different location in the coop. As far as laying, she did start squalking around the same time as she started laying! But she will also, months after she started laying , be the one to sound the alarm when I enter the yard with treats! And, we eat any and all eggs, the dogs have even enjoyed one or two 
