I am looking for a little help with getting my chickens to lay. I have four birds, two Black Sex links and two RIRs. I am not actually sure how old they are. I bought them about 2.5 months ago from a guy who claimed they were 5 months, but I know that isnt true. My guess at the time is that they were closer to 4. They came from a big flock that he was selling off, and all the big ones had been taken already. The ones I bought were in pretty good shape, but had their tail feathers mostly pecked off. We fed them grower for about a month after we got them and then switched to layer thinking they would start laying any second. We started giving them crushed oyster shells as well about two weeks ago. We have put easter eggs and even a real egg that has been drained in their nest box to try to give them ideas. I have attached photos of them, if anyone has an idea how old they are, and their coop, in case anyone sees anything that is blatantly wrong with it. I live in Gainesville, FL, so I dont think it is a light or cold related issue. The coop is kinda ghetto, I tried to replicate a design I saw on the internet. I am thinking of making the nest box more private. I removed the roost in the nest because they were sitting on it and pooping in the nest box instead of laying there. I put the poles through the coop in case they wanted to roost, but they dont seem to care about them. Also the coop was intended to house three birds, but we have four. We only wanted three, but one got away and we thought the same predators that killed our previous two would get her. Turns out three weeks later we found her in a neighbors lawn and we have her back. Also, a un-related (probably) problem: They would much rather sleep in the trees than their coop. We have to trick them into the coop about an hour before sunset or they are spending the night in a tree.