Good to know about the darkening, thanks. Not much for diverse stock here so I will likely breed him to get my numbers up. Not much culling this year with only 2 separate rooster lines
Rooster Albert and his 4 hens, 18 months old
Cockerels Twitch & Fidget Feb 2018
1st six hatched, 2 pullets, 4 cockerels May 2018
3rd hatch, 8 chicks Jul 2018
Looks like you have the sex right on those 5, our group of 6 Partridge Chanteclers are looking like 2 pullets/4 cockerels at 12 weeks. the 8 at 4 weeks are still too hard to sex.