Model 504 collapses to just three inches high for easy transporting or storage and can catch and hold 30+ pigeons at a time. Pigeons are able to walk into the trap through swinging bob style doors but are unable to exit. Bait your target area with seed and cracked corn and a water source for several days before you introduce the trap then place the trap over your target area with bait and water inside the trap. When deployed this trap measures 36L x 18W x 8H" and is constructed from 1" x 1" wire mesh. When collapsed for storage this trap measures 36L x 18W x 3H".