Ingo Arndt / Glaucous winged gull (Larus glaucescens) calling, Lake Clark National Park, Alaska, USA, August

Alan Murphy/ BIA / Glaucous-winged Gull (Larus glaucescens) catching fish, Alaska

Alan Murphy/ BIA / Glaucous-winged Gull (Larus glaucescens) flying, Alaska

Alan Murphy/ BIA / Glaucous-winged Gull (Larus glaucescens) flying, Alaska

Michael Quinton / Glaucous-winged Gull (Larus glaucescens) carrying herring prey, Alaska

David Tipling / Glaucous-winged Gull (Larus glaucescens) in flight, Alaska.

Glenn Bartley / Glaucous-winged Gull (Larus glaucescens) chick, British Columbia, Canada

Glenn Bartley / Glaucous-winged Gull (Larus glaucescens) first cycle juvenile, British Columbia, Canada

Glenn Bartley / Glaucous-winged Gull (Larus glaucescens), British Columbia, Canada

Kevin Schafer / Glaucous-winged Gull (Larus glaucescens) eating a seastar, Puget Sound, Washington

Kevin Schafer / Glaucous-winged Gull (Larus glaucescens) eating a sea star, Puget Sound, Washington

Gerrit Vyn / Glaucous winged gulls (Larus glaucescens) pair near their nest, St. Lazaria Island, Alaska, USA June