Refill that nesting wreath with this refill to keep the birds nesting in your backyard. The only nesting material available that contains a mixture of five natural-colored materials preferred by North American Nesting Birds! Feathers, String, Cotton, Hemp, and Aspen fiber all included! Because it contains all of the above, Nesting Material attracts many more birds than cotton only mixtures. Birds and consumers love it! Plus it includes twine to reattach all material to the wreath.