Bird species profile
Olrog's Gull
Larus atlanticus
- Order
- Charadriiformes
- Family
- Laridae
About the species
Olrog's Gull is a medium-sized gull distinguished by its pale gray back, white underparts, and a striking black band on its yellow bill. This species is unique among South American gulls for its specialized diet and breeding habits. It breeds in colonies on coastal islands and marshes in Argentina; outside the breeding season it disperses along the coasts of Uruguay and southern Brazil. The population is relatively small and faces threats from habitat loss, human disturbance, and pollution. Olrog's Gull is notable for its strong association with intertidal crab populations, which form the bulk of its diet during the breeding season. Conservation efforts are underway to protect its nesting sites and food sources, making it a flagship species for coastal conservation in Patagonia.
Habitat
Coastal saltmarshes, sandy beaches, and islands along the Atlantic coast of southern South America.
Foraging
Feeds mainly on crabs, foraging in intertidal zones and saltmarshes, especially during low tide.
