I was sitting watching my 2 this morning, my gander doesn't do these things maybe because he was raised with ducks I don't know but Missy my goose was chewing on the shingles on their feeder house, I picked up some gravel and started tossing them at her behind till one touched her and of course she didn't know where it came from, but it did get her away from the shingles. She is always nibbling on something.