Call is a short sharp tzi repeated quickly gaining pace to form a trill. Also a very high pitched weeer and a double note (THF: P. Morris recording).
Threats: Habitat loss
Interesting Information:   
Conservation Efforts/Measures:  

Photograph Information: Courtesy of the Delaware Publishing Company Illustrations by George Sandstrom and John R. Pierce, taken from the book "Philippine Birds" by John duPont.