Patent ID: 6827037
Filing Date: 2004-12-07
Classification: A01K

Abstract:
A birdhouse with an entrance having a selectably changeable effective entrance size comprising:A. a main body with a main body hole having a first size and for allowing a bird to completely enter said main body; and B. a constrictor plate connected to said main body and having a first constrictor plate hole through said constrictor plate having a second size and a second constrictor plate hole through said constrictor plate having a third size, said constrictor plate being moveable between a first position, a second position and a third position relative to said main body, wherein said birdhouse effective opening size is equal to said first size of said main body hole when said constrictor plate is in said first position, said birdhouse effective opening size is equal to said second size of said first constrictor plate hole when said constrictor plate is in said second position, and said birdhouse effective opening size is equal to said third size of said second constrictor place hole when said constrictor place is in said third position.