I picked up 2 Black Australorp chicks last Friday, so they are about 8 to 11 days old. Speedy and Rocket, my son named them. Speedy has impressive wing and tail feathers already, and her comb is dark colored. Rocket has wing feathers but not as many as Speedy, and Rocket's tail feathers are only just now coming in. Also Rocket's comb is a light color, sort of grayish pink. Does it sound like Rocket is a boy? Im hoping they're both pullets, but I have a feeling Ive got one of each. Thanks in advance!