Ive tried... been beer sexing for a few weeks.... i tried separating on the cricket chirp females do... but it startes looking like i have all females so it cant be right... i hope i have a few males.. not a single bird out of the 40 or so i have have crowed yet... they are 8 weeks old now... none of the males and emitting foam yet with my brown cots... so im sure i still need to give it a few more weeks... 10-12 weeks is where i find they start laying and getting mating fever usually... just thought id get a crow by now...