any puppet's design is going to guide you in the directionand materials you choose,
Puppets with feathers can look great, but they will require special care since feathers will break, and fall off, and if you are using it in a rough manner will get dirty quickly so u will need to replace them(maybe that wont matter the muppet chickens got tossed around quite abit, but would on occasion need to be repaired, u can alos use a combination of diiferent materials, maybe fur with afew feathers stuck in it to give a indication that it is a feathery creature with out going all the way to a totaly feathered covering,
here is a good source for feathers much more vareity than what you will find at your local craft store.
http://www.americanplume.com/