In this first video, he seems to be favoring the other leg, (under). I would want to check the leg for injury, especially the hip joint.
I have fashioned splints for chickens in the past, from cardboard tube and silver tape, and gotten them through healing an injury. However, if they have...
Yes, they look like Americauna pullets and show greenish feet. They would show more comb and be more cock like (rangy) by this age if they were roos.
Agree, last one looks like a young silkie. Maybe a pullet, but a bit young to tell.
