The Smooth-billed Ani is a realitivity rare bird, existing only in south Florida. (Rare exceptions)
It is very similar to the Groove-billed Ani of Central America, only a bit larger. The GbA is a very common bird, particulaly in the country of Belize.
(Because the Groove-billed Ani is more tolerant of people, it is much easier to photograph than the Smooth-billed Ani here in south Florida).