When I went to check my chick feeders this morning, I found several stones, (a handfull, actually) almost up to golf ball size in the feeder, along with a few stix, as long as 7 inches!! My feeders, indoor & out, are elevated almost a foot high, w/steps to get to the edge of the feeder, keeping most all debris below feeder level. No 6 week old chick is going to carry a golf ball sized stone into these feeders. They couldn't open their beaks enough to do this. I live alone, so no one else could have done it. Their outdoor "run" has stones & a couple stix laying around, but the inside is layed out w/about 4 inches of fresh wood chip. Anyone out there have any answers to my puzzlement??