This tiny bird is endemic to Cuba and only measures up to 11cm.

The Cuban Tody belongs to the family Todidae which includes just one genus: Todus.
There are five species, all found only in the Greater Antilles, each endemic to one island. 
There is one Tody each on the islands of Cuba (Cuban Tody - Todous multicolor), Puerto Rico (Puerto Rican - Todus mexicanus), and Jamaica (Jamaican Tody - Todus todus), and two todies on Hispaniola.
All five Todies have bright green on the crown, back, and tail, a brilliant red throat, and a pale underside, but each has a unique combination of pink, baby blue, and/or yellow. 
Only the Cuban Tody features all three of those colors, hence its scientific name: Todus multicolor.

Soroa area, Cuba, 9 January 2016