The Amazonian Royal Flycatcher, like many flycatchers, likes to dart out from branches to catch flying insects or pluck them from leaves.
Their nests are pretty unusual. They build a long nest (sometimes up to 6 feet) on a branch near water. The nest hangs over the water. It is hard for predators to reach.
Both males and females have very elaborate crests which they display with mouth open as in the photo. The male's crest is red and the female's crest is yellow.