Crotophaga sulcirostris (groove-billed ani)
This unusual vocalization was made by a single Groove-billed Ani (Crotophaga sulcirostris) in Monteverde (Costa Rica) - Jim Zook, an accomplished ear-birder in Costa Rica says that he has also heard this call from the species.
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.
To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2013. The Animal Diversity Web (online). Accessed at http://animaldiversity.org.
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.
This material is based upon work supported by the National Science Foundation under Grants DUE-0633095 and DRL-0628151.
The ADW Team gratefully acknowledges their support.