Hen pics; notice the shorter tail/train? Shorter legs also with a smoother rounded body appearance, Yearling cockbird; triangular tips on the train feathers and hurl behind the butt and on the sides of train feathers.
Other signs you can look for are a longer thinner train that comes to a point for a cock, whereas a hen will be shorter and blockier. A cock will have a whispy hurl at the base of the butt that hangs down. When they display a cocks train will make a point like a spade and a hen will be rounded...
The first pic appears to be a hen, the other pics don't tell me much. The difference in the neck feathers is that the cocks feather is like fingers and tends to lay flatter than a hen that is more smooth. Also, note that the first pic shows a neck ridge. That is where the feathers make a line...