The bird in the video is a Scarlet Ibis (Eudocimus ruber)

The bird in the video is a Scarlet Ibis (Eudocimus ruber),
a vibrant red wading bird native to tropical South America and parts of the Caribbean.
 It is known for its striking scarlet plumage, which comes from the carotenoids in its diet of crustaceans. 

The Scarlet Ibis is the national bird of Trinidad and Tobago and is featured on the nation's Coat of Arms. 

These birds are social and often gather in flocks, especially during the breeding season, foraging in shallow water and roosting in tall trees.