Weren't you paying attention during Combat Survival lectures...???
1. Birdie lands on perch to grab whatever goodies you've put on the pointy end - note it must be pointy or the bird will sit on it.
2. Weight of bird causes perch to fall out of hole.
3. Loop of wire, previously restrained by perch peg, is now pulled taut by weight on end of wire.
4. Bird is thus trapped by legs.
...is what is supposed to happen. However, zealous survival trainees often made the weight too large, so when they returned, they would find a bird's landing gear, but no bird.....
Like all animal snares, don't make one of these unless you have to....
