The Great Kiskadee appears like a much bigger version of the very familiar Lesser Kiskadee (in Guatemala and south to Argentina).
However, the Lesser Kiskadee prefers wetter areas like swamps and has a much thinner bill than its bigger brother.
In addition, the Great Kiskadee makes a sound like "kiss my rear" while the Lesser Kiskadee makes rather nasal, buzzy and slurred calls.

There are currently 10 recognized subspecies of the Great Kiskadee. 
This is Pitangus sulphuratus sulphuratus which is found in Suriname, the Guianas and north, west, central Amazonian Brazil, southeast Colombia and east Ecuador to southeast Peru.

1st & 2nd photo: Banabeki B&B area, Republiek, Suriname, 12 October 2016
3rd photo: Eating a lizard. J.A. Pengel International Airport area, Zanderij, Suriname, 14 October 2016
4th &5th photo: Overbridge River Resort, La Simplicite, Suriname, 18 October 2016