“Managed to make a video clip of the Brown Hawk Owl (Ninox scutulata) calling in the middle of the Singapore’s Central Catchment Area. It looks like when it is making the call the bill is not opened, only the throat pouch is expanded and contracted when the call ends. However I did observed on some other occasion on another bird, the bill was slightly opened.
“Brown Boobooks can be found from Indian sub-continent to SW China, Philippines, Malaysia, Singapore and Indonesia. So it is quite a common owl.
“The old name of this owl is Brown Hawk Owl.”
8th September 2010