The Split wing looks like two wings on one. Slipped wing with the twisted feather is harder for me to spot. I have a Silkie chick that I'm watching for this. I think Slipped wings and twisted feather are more common. I've personally not seen a Split wing yet. Thank ful for that. Silkies take a long time to mature completely so I won't be quick to cull until she matures to egg laying age. I think all of these deformities would be hard to judge in chicks. For me any way.
Squirrel tail is very common in straight run hatchery roos. Crooked keel I think as well. Big hatcheries just don't care about conformation. You'll also see lots of side sprigs and weirdness in combs in general in hatchery run. That's been my experience where I live.
Rose Comb.
Single Comb.
I never used to care what the combs were like when I first started raising chickens. What I have learned is if you want to sell your birds for top $ then you need to cull for defects. Comb defects are one of the hardest things to breed out of a messed up flock. It can take years and years. Better to start off without defective combs to begin with.
