This map shows their range. They are very easily found in the Pantanal. The photo above was taken in the grounds of Pousada Piuval last September. Yellow-chevroned Parakeets usually find holes in trees to nest in. They will also form nesting tunnels in dead palm fronds. It lays 4-5 eggs. After raising its young, all birds will form rather large communal roosts until the next breeding season.
This video shows what a pleasant chirp they have!