Years ago while working down in my basement I heard this noise that kinda alarmed me, to put it mildly. I didn't know what the heck it was. At first I couldn't figure out where it was coming from. Come to find out it was from a wood stove that was still hooked up to our chimney, (or as one guy called it up here chimalee). It was sort of a scratching and wings flapping noise. With big time hesitation I got these construction gloves on, finally got brave enough to open the door and it ends up being a green mallard. It flew down the chimney (about 15 feet) and then down about 3 feet of 6" stove pipe. I reached in and rescued it. Off it went, no harm was done. Scared the life out of me though.