No animals are harmed to collect these materials. All of the bones, feathers, and quills I use are found on my property in rural Kings County, New Brunswick.
It is amazing how much activity happens from the local animal residents. I have seen tracks and traces from many animals that are found in New Brunswick. Some examples that come to mind are black bear, lynx, bobcat, coyote, moose, deer, rabbit, porcupine, groundhog, raccoon… I never know what I might find!