It is crooked toes which happens at hatch, usually from genetics, but some claim it happens from irregular incubation temperatures. It won't affect the chicken that much. When they are first hatched you can sometimes tape the toes or make it little shoes to straighten toes, but once they are a couple of weeks old, it is too late. I have one from the hatchery that is much worse than that, and she can get up on 2x4 roosts okay.