So I have two pullets, one a Rhode Island Red and one a Black Sex Link. Each are 20 weeks old, or about 5 months. My RIR has a very big comb and wattles, so I’m expecting her to start laying any day. However the BSL has very little comb growth, despite the fact shes the same age and size as the RIR. The hatchery said they should start laying at 18-20 weeks old. Development may be delayed because it’s winter, but surely the BSL should have at least a mid-sized comb?