Yes, that one is a cockerel, luckily the other two were girls. One on my Black Copper Marans has a big white spot on its head so I wonder if it was mislabeled and is really a Cockoo Marans?
I had ordered cream legbar hatching eggs. The very few hatchlings were cockerels. Cuckoo marans babieshave spotted heads while black copper marans babies look like penguins, sort of. You can tell what they are when they start feathering. You have lots of Milestones to look forward to. My BCM's all had feathered legs as babies (and still do) but not all do so that may not help.