ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,471,574, issued on Nov. 18.
"Dial-a-beak" was invented by Roger Soldano (Charlevoix, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An adjustable bird feeder designed to regulate access to food based on the beak length and feeding behavior of different bird species. The feeder includes at least one food cage positioned within a frame and at least one movable face located adjacent to the food cage. A user-operated adjustment mechanism, comprising a threaded rod and control knob, moves the face toward or away from the food cage. In the spring-assisted configuration, compression springs provide controlled face retraction. In the single-cage configura...