I came around this piece recently and recognized it as a bait/cricket/grasshopper horn,,,,,,,,,,,,I think. I was highly interested how the original maker put this together while on the surface you would think of its' simplicity for the look, but after studying this for a time I became puzzled about the purpose of the 'spout' end. The only I can think of was to provide an 'air chamber' for whatever he/she put into it. As for its' construction, the spout end was built first in order to determine where to put the slot for the sliding 'door' to open and close. It does not remove, there is some 'stop' built into the 'wooden wall'. Very interesting piece. Likewise the sliding door at the base end is tapered and not removable. It moves just enough to stuff the critter into the horn with a hole about 3/4" in diameter. Hopefully all the pictures come through well. This is only about 4 1/2" long.