Ameraucanas don't really crow, but the personality is unmistakable right after hatching. They simply behave differently -and that is why you are likely convinced you have a boy, while in physical appearance it's hard to tell -especially with this breed at early age. I got mine a day old and didn't have medicated starter food; I bought him from a brooder with all other chicks in a farm and I was warned of all common diseases. They were all screeching loud and when I picked up this one -he looked at me and stopped screeching
So without vaccination and medicated food I had to force feed and though I can see it was hard for him to swallow he pretended to eat just to look tough; pruned his feathers even when he didn't have feathers, stretched...and fell) but the attitude of resilience is unmistakable. Also roos always like to stay on top; fly; show off, eat differently, leave food for the pullets they like, be the leader; do things differently, you can just tell. Smart birds 
