A bird trap and cat feeder for catching birds and feeding the birds to a cat. The trap designed to catch birds the size of a sparrow while releasing smaller song birds, wrens, swallows, or the like. The feeder providing means for continuously supplying a cat or neighborhood cats with sparrows to eat...http://www.google.com/patents/US4150505?utm_source=gb-gplus-sharePatent US4150505 - Bird trap and cat feeder
