Rural Gardening: Chick slow to fledgeworry or not?, 1 by Catscan

Catscan wrote:
Okay, with Patchouli78's encouragement and Backyards' egg yolks, I've decided that the little Welsummer is going to be okay. But there is still a big difference in the primary and tail feather development. I did learn that there are sex-link crosses that they make based on feather development--the males will feather out more slowly than the females. But that shouldn't apply to Welsummers--and it is my big one that is fledging well and the little one isn't. The two RIR are showing similar differences, but nowhere as striking. Here is a picture--you can see that one Welsummer has a tail and long primaries, the other no tail and primaries barely longer than when they hatched. Odd.