Okay, sorry for my forgetfulness! LOL. The one in the third picture looks like it might vaguely have Legbar in its genetics, but definitely a mix overall.
It is certainly too early, but I agree with what @LaurenRitz said because cockerels tend to feather out more slowly than pullets.
Cockerel. For your information, when cockerels get to their raging hormone stage at about six months old, do not let them on your shoulder for safety reasons (unless they still act really affectionate with you like they would never do any harm to you.) A cockerel who is getting changed by his...
Not in my experience, but all breeds are different so you can also be correct. I see your reasoning and it is right. It depends on the individual, every chicken is different.
Easter Eggers have varying comb growth rates, since they are mixed breeds. If the chicken was a cockerel then it would have pointed hackles, not rounded hackles.
They are both Easter Eggers. I cannot predict what color both pullets will end up laying, but if they lay blue, green or pink that will confirm them being Easter Eggers.
Pullet bins at Tractor Supply are practically straight run bins, I wouldn't trust their employees. Vent-sexing is not an entirely accurate way of telling the gender.
I have never seen Tractor Supply Easter Eggers have crests before (assuming that is what you mean by a "pouf of feathers".) It might be different depending on where you live but I have had many Easter Eggers from Tractor Supply and none have crests. The main difference I would say is in color...
Tractor Supply does not carry real Ameraucanas, all of them are Easter Eggers. You will be able to tell what they look like when they grow older, but they are Easter Eggers.
A Prairie Bluebell Egger is simply a type of Easter Egger that has been marked with a different name. A lot of hatcheries are now creating their own lines of Easter Eggers, with the Prairie Bluebell Egger being one-the purpose of this is to get more customers, as the name may spark something in...
The first is a cockerel because of reddening comb, pointed hackles, and the red coming in on his wing bows. Red wing bows are a trait that only males can have. A blue tint on the tail means nothing for the gender, I'm not sure what you are talking about?
Size is not always a good indicator of sex, since different breeds have different sizes and pullets can also be larger than cockerels when they are young chicks. I hatched out two chicks once and the pullet was significantly larger than the cockerel, but now that they are grown, the cockerel is...