22-3-2026 ATLANTIC OCEAN, OFF PORTUGAL - AZOREAN GULL (Larus michahellis ssp. atlantis)

The Azorean gull, specifically the Yellow-legged Gull subspecies Larus michahellis atlantis, is the only seagull that breeds in the Azores. It is often called the Atlantic gull, characterized by smaller, darker plumage compared to Mediterranean counterparts. These seagulls are 54–64 cm long, live up to 32 years, and nest in colonies from March to May. 

Key Facts About the Azorean Gull (Larus michahellis atlantis)

Breeding & Population: Around 4,000 pairs breed in the Azores, nesting on the ground in coastal areas using seaweed, twigs, and feathers. 

Appearance: They are generally smaller and darker than Mediterranean L. m. michahellis. Key features include yellow legs, a grey back, and a white head in the autumn. 

Diet: They are opportunistic, feeding on fish, crabs, invertebrates, reptiles, small mammals, and waste. 

Unique Characteristics: They have been known to exhibit, or be, the ancestral stock of other gull species and have a distinct genetic divide from mainland Morocco populations. 

Behavior: They are known to be vocal, intelligent, and can act aggressively in securing food.