Here is how my Den made a bird call that worked:
We follow the direction in the Bear book but here are the details it leaves out:
Large Chunky screw eyes (I mean large I purchased 3 inch long screw eyes that were 3/8 inch width at the base) I uses a 1/4 inch drill bit to get it started into the wood
Large dowel (Cut into however many pieces you need)
Rosin(I found in the bowling alley pro-shop) they are bags for drying your hands.(we just puff the screw eye with the bag)
You don't need to inset the screw eye very far. Just a turn back and forth and it worked!!
Good luck!!
Stef