Experienced and novice birders will delight in David Allen Sibley's colorful bird portraits as they find favorite backyard birds while piecing together a 1,000-piece jigsaw puzzle. Each of the birds in this piece of art--from the Great Horned Owl to the Goldfinch--is displayed in proportion to the flock of birds around it, making this puzzle a unique educational look at the sizes of a variety of North American birds. The colorful, challenging puzzle promises hours of fun packaged in one sturdy box, and the assembled result spans a generous 20 x 27 inches.