I really can't tell which species this flamingo is. The color of the beak is telling me greater, but the feather color doesn't match with greater, I think? Hybrid?
Looks like a mix of Caribbean/Greater/Chilean characteristics across the whole flock. Some look as though they are (or could be) pure, a lot look hybrid-y to me. My feeling is this is a Caribbean x Greater hybrid, just from appearances.
@Maguari Yeah, I assumed so. And I also assume that the whole flock is more or less mixed as they have kept Chilean, Greater and American flamingos together for a while with them producing offsprings every year.