Originally Posted by Prism99
I read years ago that we should not put fabric scraps out for birds nests because fabric doesn't dry out fast enough after a rain, endangering baby birds in the nest. So, that option is out for me.
Cotton is made of the same cellulose as grasses that birds would use - that makes no sense to me at all. As to size, it depends on what you are using it for. Kids' arts and crafts classes would love scraps too small to sew