Doug Wechsler / Red knots (Calidris canutus) Ruddy turnstones (Arenaria interpres) and Semipalmated sandpipers (Calidris pusilla) Franklin's gull (Leucophaeus pipixcan) and juvenile Herring gulls (LEucophaeus atricil...

Cyril Ruoso / Franklin gull (Larus pipixcan) stood on the head of is walking on the head of a South American sea lion (Otaria byronia) Peru.

Cyril Ruoso / Franklin gulls (Larus pipixcan) flock on the south coast of Peru.

Charlie Summers / Franklin's Gulls (Leucophaeus pipixcan) posturing as they communicate. West Beach, Gulf Shores, Alabama, April.

Charlie Summers / Pair of Franklin's Gulls (Leucophaeus pipixcan) beak knocking, Guls Shores, Alabama, USA, April

Gerrit Vyn / Franklin's Gull (Leucophaeus pipixcan) in breeding plumage in flight. Alberta, Canada. June.

Hanne & Jens Eriksen / Franklin's gull {Leucophaeus pipixcan} winter plumage, in flight, Paracas, Peru

Marie Read / Franklin's gull (Larus pipixcan) adult in breeding plumage, chasing damselfly in flight, Bowdoin National Wildlife Refuge, Montana, USA

Marie Read / Franklin's Gull (Larus pipixcan), adult in breeding plumage chasing damselfly in flight, Bowdoin National Wildlife Refuge, Montana, USA