The rufous hornbill, also known as the Philippine hornbill and locally as kalaw, is a large species of hornbill endemic to the Philippines. It is called the "clock-of-the-mountains" by locals, because
Roufus Hornbill
Southern Rufous Hornbill
A captive ssp. semigaleatus
A 2007 Philippine postal stamp incorrectly labelling a Rufous hornbill as a Writhed hornbill