Hi! We have 15 Buff Orpingtons that are a little over a week old. The hatchery guaranteed 95% accuracy, but we are unsure as to whether some of our girls are actually cockerels. Ten of them have beautiful wings and tail feathers, while five have much smaller wings and little to no tail feathers. Are these chicks actually cockerels or are they merely not growing as fast as the others?
This is a picture representing what 2/3 of our chicks look like.
But here is a picture of what the other 1/3 look like.
Can anyone help me?
This is a picture representing what 2/3 of our chicks look like.

But here is a picture of what the other 1/3 look like.

Can anyone help me?