Cinereous Harrier, Circus cinereus, smallish and beautiful raptor. Their habitat includes damp terrains, grasslands, cultivated fields and arid Patagonian steppes with scattered bushes.
The southernmost populations migrate nothwards to more temperature regions of Central Chile and Argentina. Although, many individuals remains in the southern regions during the colder months.
Hunts by long and low glides with slow wing-beats, above the reeds, bushes and grasslands, looking and chasing for its prey, composed mainly by rodents, small birds, frogs and insects.
A small and very territorial group protect the breeding territory in the middle of the patagonian steppe with Greenbush, Lepidophyllum cupressiforme.