I got some Embryology chicks from the grandson and have been researching sexing these critters. He has already been warned that no roosters will survive I came across: http://www.oznet.ksu.edu/pr_histpubs/Pubs/SB307.PDF Did I read this correctly? Leghorn hens feather out in wings and tails sooner than the roos? Mine are 2 weeks old now and there are definite differences in the feathering. Anyone have leghorn experience?