Let me just start by saying that the chicken gods have been VERY good to us in our venture of chicken keeping. When ordering our first flock of chickens we ordered 12 expecting to loose some chicks and end up with several roosters (half of the chicks we ordered were straight run). After lots of waiting and speculation we lost none of them as chicks and ended up with NO roosters. We now have our second flock of 11 chickens, half of which are also straight run (again we ordered more expecting to loose some chicks and get acouple roosters). They are now almost 11 weeks. We have not lost any and after lots of advice we believe only one is a rooster. So all that being said I have no experience with roosters and am really unsure when to expect crowing. I cannot keep him if he is a rooster and since I have gotten attached I don't want to give up until I hear a crow. It has been bumming me out as I also wanted some dark brown eggs but then I have to remind myself that we have been very lucky with only 1 out of 23 being a rooster. Just for reference the rooster is a cuckoo maran.
Here is a picture of him (pic taken at 9 weeks old)

Here is a picture of him (pic taken at 9 weeks old)