A wrinkled hornbill.
hornbill definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a family (Bucerotidae) of large, tropical, Old World coraciiform birds with partly united toes and a huge, curved bill, often with a bony protuberance
hornbill definition by American Heritage Dictionary
Any of various tropical Old World birds of the family Bucerotidae, having a very large bill often surmounted by an enlarged protuberance at the base.