I got 2 new hens last week, the farm said they were between 18 to 20 weeks old. Tonight after they had gone in to roost i heard a lot of noise coming from the coop, started to make my way out there as i thought my 2 original hens were fighting with the 2 new ones, but as i got nearer i realised it was the egg song that they do before or after laying an egg. When i went in the coop i see it was one of my new hens making all the noise, she was sat on the roost and shut up as soon as i went in there, does this mean she will be laying soon and how soon can i expect to see her 1st egg?