My first post, but I've been gleaning wisdom for a few months. First year, two chickens, in the city, free range--production red and americauna. Red kept disappearing; nesting, but I never could find her. Then one day I heard her sing an egg-laying song . . . above my head. She has been laying eggs in a squirrel nest about 20 feet up a white pine tree. (I kept her in the coop all day today until she laid an egg.) Has anyone else had such a thing happen?