Reserva Caleta de Los Loros, Nature reserve in Adolfo Alsina Department, Argentina

Reserva Caleta de Los Loros is a nature reserve on the Atlantic coast of Argentina, in the province of Río Negro. The area combines sandy beaches, dunes, salt marshes, and rocky shoreline sections, all close together along the water.

The area was designated a protected zone in 1984 to keep the coastal landscape and its wildlife safe. In 1998, the protection was extended to cover the rocks, fossils, and sites of archaeological interest found there.

The name Caleta de Los Loros refers to the inlet itself, not to parrots nesting there; the sources record no parrot colony. The reserve covers about 9,000 hectares, of which just over 4,300 are land, and its management plan addresses the growing number of tourists and their use of scarce drinking water. Visitors today come for the coastal wildlife, including a non-breeding colony of South American sea lions.

The reserve is reached by a gravel road that branches off from the main road, and a vehicle with good ground clearance makes the drive easier. There are few facilities on site, so visitors should bring their own water and food.

The reserve covers about 9,000 hectares, of which just over 4,300 are land; the rest is marine. Its shoreline is a non-breeding haul-out for South American sea lions, and southern elephant seals and orcas are occasionally recorded there.