I decided to try and capture them taking it with Birdsy. I filled a suet cage with sheep wool that is sold as nesting material, and added pieces of natural string that I disintegrated into pieces that are less than 9 inches long and separate at an instant. You can see that too when the bird takes off. The blue and white plastic ribbon was something an Oriole brought to the yard, and I thought I would just add it too.

Please do not put out dryer lint or pet hair from a pet that has been treated with medication or flea/tick stuff. Bird babies will not be able to tolerate the chemicals. there are informative articles by Audubon and Cornell Labs out there about what nesting material to offer. Try to be as natural as possible.