Variety is good.

I've seldom had chickens to feed off, but I've fed an assortment of fresh killed ringneck doves, pigeons, and other birds to colubrids, boa constrictors, and Burmese pythons. Most of my snakes have loved them.

I find that snakes have a tendency to get hung up at the elbow joint of the wings. Taking the wings off there makes swallowing easier. Cut through the joint to avoid making jagged slivers of bone.