I ordered my chicks as day olds and they got to my home a couple of days later. All seemed fine, I was watching for pasty butt and taking good care of them. I am a stay at home Mom and both of my children are school age....so I have plenty of time to dedicate to chicks. I was always out there watching them etc. I never saw these 2 chicks go on their own. I noticed 2 were struggling they would squat and try to eliminate but nothing would come out. They looked different as well, they had a wider girth and upright stance noticeably different than the others. They never had poo dried to their butts. It was like an internal pasting up. I would take them to the sink and run warm water on their bum and massage the poo out. It felt like a little hard marble on the inside. It didn't take long and they really looked bad...got to the point they were trying to go constantly and squealing in pain. So I PM'd a frequent poster on this thread and they advised me to cull them. They thought it sounded like they were born with too short of a back which causes them to have elimination problems. So I followed theirr advice, and do feel it was the right decision as they were really suffering. I do not think the breeder I got mine from selectively breeds, as far as I understand all her colors are mixed together. Which at the time didn't seem like a big deal since I was not looking for show birds just backyard pets.