Hyacinth macaw

One of the natural enemies of the hyacinth ara is the Toco toucan.

An excerpt from the article 14 facts about Hyacinth macaw

There is a connection between these birds, as the toco toucan eagerly eats manduvi fruit, thereby spreading the seeds of these trees, which gives the hyacinth macaws more trees to nest in. However, toucans raid the nests and eat the eggs.