Unfortunately we aren't sure when she was born. I got her and Willie from tractor supply on March 3, 2017 but she was the same size as the other 4 chicks we got at that time. I didn't realize how tiny she must have been to start, so I'm guess they were at least a week or 2 old by the time we got them. She laid her first egg on Saturday. So that was 21 weeks after I got her. She was more developed about a month after we got her, where her body was covered in tiny feathers where as the others had a good bit of fluff still. (this pic is of her on March 31st). Her egg is show below. The one right next to it is what I would consider a medium egg, but I haven't weighed any of them. It's not exactly white, more of a cream color.What age did she start laying?