A gull perched on a bowsprit, one bird flying over. Image note: scratched.

A gull in flight catching a piece of bread from the air. Ships are visible in the distance. Image used in “American Birds.

A glaucous gull nest with three eggs.

A downy young glaucous gull chick in the palm of an unidentified woman’s hand. Two eggs are in a nest below.

Dallas Lore Sharp holding a young gull chick. Two eggs set on the ground to the side.

A flock of juvenile gulls in the tules near Klamath Lake. The outline of Dallas Lore Sharp and an unidentified man are visible in the tules observing the birds.

A flock of juvenile gulls in the tules near Klamath Lake. The outline of two unidentified men are visible in the tules observing the birds.

A flock of juvenile gulls in the tules near Klamath Lake. The outline of two unidentified men are visible in the tules observing the birds.

A flock of juvenile gulls in the tules near Klamath Lake. The outline of an unidentified man is visible in the tules observing the birds.

A flock of juvenile gulls in the tules near Klamath Lake. The outline of an unidentified man is visible in the tules observing the birds.