This "Eastern Yardbirds Card" is used with the Birdsong Identiflyer (F0101). A great addition to the Birdsong library. Birds featured on this card: Ruby-throated Hummingbird, Blue Jay, Tufted Titmouse, Carolina Wren, Eastern Bluebird, Wood Thrush, Gray Catbird, Eastern Towhee, White-throated Sparrow, Coomon Grackle. D3302