Baby birds tend to have really splayed hips! At least, a lot of parrots do, though admittedly by the time they have that well developed feathers, that's not as obvious of a characteristic (probably both due to feathers covering the hip joint, and the increased tendency to sit on their feet instead of their butt, something I've never seen in an adult bird I don't think).
This is a baby cockatoo sitting with his hips all over the place. I'm guessing that sort of adorable awkwardness was the inspiration for the hips - I recognized it as a baby bird feature immediately.
I'm excited for Fester revamps! Can't wait to see what happens to Bloodred.
Chai has lovely coloring. I'm not sure what to make of the mouth expression though.