Wild Republic Audubon Bird Northern Cardinal. Wild Republic's Audubon Birds Series is now in its 10th year and still going strong. This is undoubtedly due to the tremendous popularity of Birding, the second most popular US hobby.These little plush birds are 5 to 6 inches long and sing their own particular song when squeezed.They are made by Wild Republic in partnership with the Audubon Society. The bird sound recordings are made by the Cornell Lab of Ornithology. Item number 18221. Surface washable