pullet or rooster

Trying to determine if the blacker one could be a rooster?3 months old was sold a hen but after posting these phases a couple people say they think it’s a rooster Help would be greatly appreciated

Almost 9 weeks...

I can only get pick this chick up if it is a pullet. The one who has doesn’t know. All I have to go on are these two photos. Can anyone help me?

I have two Silkies that are 14 weeks old and I am having a difficult time telling if they are pullets or roosters. At first I thought pullets, but they are stumping me now with their crests. The first 4 photos(same bird) its new crest hairs seem to be all around its crest. Comb is pretty flat...

I have 3 Black Copper Maran 4 week old baby chicks that I all three look similar and am wondering if it is a pullet or a rooster. I am attaching a photo of one of them. These photos are of just one chick. This one is so docile and friendly. She/he walks right up to me when I walk in the coop...