Ismaele Tortella / Black-legged kittiwake (Rissa tridactyla) nesting above a window, Lofoten, Norway, August.

Juan Carlos Munoz / Two juvenile Atlantic yellow legged gulls (Larus michahellis) in flight, Izmir, Turkey, October.

Angelo Gandolfi / Yellow-legged Gull (Larus michahellis) flying beneath cliffs on the steep western side of Monteagudo island, Atlantic Ocean. Parque Nacional de las Islas Atlantica (Atlantic Islands National Park). Ga...

Wild Wonders of Europe / Quinta / Yellow legged gull (Larus michahellis) on rock, Cabo Sardo, Alentejo, Natural Park of South West Alentejano and Costa Vicentina, Portugal, June 2009

Wild Wonders of Europe / Quinta / Yellow legged gull (Larus michahellis) in flight, Cabo Sardo (Cape) Alentejo, Natural Park of South West Alentejano and Costa Vicentina, Portugal, June 2009

Wild Wonders of Europe / Quinta / Yellow legged gull (Larus michahellis) in flight, Almograve, Alentejo, Natural Park of South West Alentejano and Costa Vicentina, Portugal, June 2009

David Kjaer / Yellow-legged Gull (Larus cachinnans) & two Juvenile Herring Gull (Larus argentatus) catching fish and fighting, Poland

Sergio Hanquet / Yellow-legged gull (Larus michahellis), juvenile in flight over sea. Tenerife, Canary Islands.

Sergio Hanquet / Yellow-legged gull (Larus michahellis) group in flight and resting on sea. Tenerife, Canary Islands.

Sergio Hanquet / Yellow-legged gull (Larus michahellis), two standing on rock. Tenerife, Canary Islands.

Robin Chittenden / Yellow-legged gull (Larus michahellis atlantis) standing on rock, Fuerteventura, Canary Islands, Spain. February.

Wild Wonders of Europe / Widstrand / Yellow-legged gull (Larus michahellis) eggs in nest, Velebit Mountains Nature Park, Croatia, April 2014.