My first five hens were 3 months old and were easily sexed. Now then, this past weekend I couldn't walk away from two swaps empty handed, and so I ended up with 4 older baby chicks. The very nice couple that I bought them from was upfront and admitted they weren't good at sexing, but would try. I read up on how to vent sex them and to be honest with you, I didn't see any 'nubs' but I'd be shocked if I were right the first time. The white leghorn's comb is pretty large compared to the others.... Thanks for your help and thoughts!! All four: White Leghorn: Cuckoo Maran: RIR: Buff Orp: Thanks Again!