David Perpinan / Three Black-hooded parakeet / Nanday parakeet (Nandayus nenday) in a tree, cleaning beaks on the branches, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Black-hooded parakeet / Nanday parakeet (Nandayus nenday) feeding, Pantanal, Mato Grosso do Sul, Brazil.

Angelo Gandolfi / Flock of Nanday Parakeet (Nandayus nenday) at feeding table. Pantanal, Brazil.

Pete Oxford / Black-hooded Parakeet (Nandayus nenday) Pantanal, Mato Grosso do Sul, Brazil

Pete Oxford / Black-hooded Parakeet (Nandayus nenday), Pantanal, Brazil

Claus Meyer / Black-hooded Parakeet (Nandayus nenday) perching on snag, Pantanal ecosystem, Brazil

Tui De Roy / Black-hooded Parakeet (Nandayus nenday) in savannah woodland edge, Caiman Ecological Refuge, Pantanal, Brazil

Tui De Roy / Black-hooded Parakeet (Nandayus nenday) trio in tree, savannah woodland edge, Caiman Ecological Refuge, Pantanal, Brazil

Tui De Roy / Black-hooded Parakeet (Nandayus nenday) flock members tussling playfully, Caiman Ecological Refuge, Pantanal, Brazil

Etienne Littlefair / Hooded parrots (Psephotus dissimilis) pair drinking from a puddle in a drying creek bed, Pine Creek, Northern Territory, Australia.

Bruce Thomson / Nandy or Black-hooded parakeet (Nandayus nenday) perching in tree, Pocone, Brazil.

Bruce Thomson / Two Nandy / Black-hooded parakeet (Nandayus nenday) perching in tree, Pocone, Brazil.