I know this is an old post but I just saw it! I have a 9 week old Bantam that crowed for the first time on Sunday,and she/he was born on April 1 also!! I am really hoping she is a roo. Her name is Cinderella but will be changed to Prince Charming if she is a he!Bump.
I have some sort of Bantam roo that has been finally developing a spur for the past 2 weeks. It was born around April 1st. (No joke)So, mine is somewhere of 40 weeks old and it never crows, nor does it have a large comb. It's so tiny of a chicken, that it is pretty much at the bottom of the pecking order. If it weren't for it's sporty(ness) it would prolly be dead. It can fly up to a 5' high pirch and out run the mean ladys any time.
Has anyone ever seen/hear of such a thing?