I have 6 Buff Orpingtons that are about 22 weeks old. One of them (Lumos) has been squatting for about 2 to 3 weeks. Recently she has been making noise but only for a few minutes and at a certain time. Today, after I let all of them out, she has been making noise non-stop. She has also been wandering around alone. I also searched up the egg laying song on youtube and the sound she is making is similar to that but she hasn't laid an egg yet? Does this mean the first egg will be laid tonight?