Thanks. I just dug up a lot of photos on the suggestions. The crested ones appear to match Legbar olive eggers. The feather patterns seem to support the choice. As far as photos I find them to be too feisty for one hand hold and pics with the other hand. .
Unknown breed and sex. I have three. One has smooth head like most chickens but two have bad hair days with a Mohawk. I suspect they are cockerels. They have just developed a new set of feathers and appear to be Brown Leghorns. Just not sure yet. Roughly 6-7 weeks old. Any help?