Ingo Arndt / Horned Puffin (Fratercula corniculata) pair on cliff edge, Round Island, Bristol Bay, Bering Sea, Alaska

Ingo Arndt / Horned Puffin (Fratercula corniculata), Round Island, Bristol Bay, Bering Sea, Alaska

Gerrit Vyn / Horned Puffin (Horned Puffin). Pribilof Islands, Alaska. July.

Gerrit Vyn / Horned Puffin (Horned Puffin). Pribilof Islands, Alaska. July.

Marie Read / Horned puffin (Fratercula corniculata) close-up portrait, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffins (Fratercula corniculata) pair interacting by touching bills while perched on cliff ledge, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffins (Fratercula corniculata) mated pair 'billing', St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffin (Fratercula corniculata), close-up with open bill (yawning), St. Paul Island, Pribilofs, Alaska, USA. The rearward-facing spines visible on its palate enable it to carry multiple fish at...

Marie Read / Horned puffin (Fratercula corniculata), with outspread wings as it tries to keep its balance on steep cliff ledge, Southwest bluffs, St. Paul Island, Pribilofs, Alaska, USA, July.

Marie Read / Horned puffin (Fratercula corniculata), close-up with open bill (yawning) facing camera. St. Paul Island, Pribilofs, Alaska, USA. The rearward-facing spines visible on its palate enable it to carry mu...

Jacob S. Spendelow / Horned Puffin (Fratercula corniculata), Alaska

Jacob S. Spendelow / Horned Puffin (Fratercula corniculata), Alaska