These birds produce one of the loudest calls of any bird!
This image is of an adult male bird calling in the Arima Valley of Trinidad.
Males can be found in rather loose leks in the subcanopy from where they call for much of the day. Photographing these birds is difficult due to the low light levels -this image was taken @ 1250 ISO with an aperture of F4 and a shutter speed of 1/80sec.
Note the massive vocal aparatus bulging out the upper chest.
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Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
EU
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)