HHow Birds Make SoundHow Birds Make Soundde Barry Kent MacKayMateriasBirdsEdiciones (1)How Birds Make Sound (1999)Stackpole Books · inglés · ISBN 9780811726740Más obras de Barry Kent MacKayWrens, dippers, and thrashers2001The Birdwatcher's CompanionEEighty more land birds to knowEighty more land birds to know