Swallow-tailed Gull Parent Sitting on Egg in Nest
Nancy Gleason
Swallow-tailed Gull Parent Close-up with Egg in Nest
Nancy Gleason
Swallow-tailed Gull Parent over Egg Close-up
Nancy Gleason
Swallow-tailed Gull Parent over Egg on Genovesa Shore
Nancy Gleason
Swallow-tailed Gull Parent Checking Egg Close-up
Nancy Gleason
Swallow-tailed Gull Parent Checks Egg in Ground Nest
Nancy Gleason
Swallow-tailed Gull Parent Checks Egg on Genovesa Shore
Nancy Gleason
Pair of Swallow-tailed Gulls Exchange Duty over Egg
Nancy Gleason
Pair of Swallow-tailed Gulls Guarding Egg on Nest
Nancy Gleason
Galapagos Sea Lion Mother Nursing Pup
Nancy Gleason
Swallow-tailed Gull Portrait at Genovesa
Nancy Gleason
Swallow-tailed Gull Protecting Nest on Genovesa Shore
Nancy Gleason
Galapagos Sea Lion Portrait at Genovesa
Nancy Gleason
Red-footed Booby on Shore at Genovesa
Nancy Gleason
Swallow-tailed Gull Preening at Great Darwin Bay
Nancy Gleason
Magnificent Frigatebird in Flight over Genovesa
Nancy Gleason
Galapagos Sea Lion Backbend
Nancy Gleason
Galapagos Sea Lion Pup Walks on Shore at Great Darwin Bay
Nancy Gleason
Galapagos Sea Lion Pup in the Sun at Great Darwin Bay
Nancy Gleason
Galapagos Sea Lion Pup on Shore at Great Darwin Bay
Nancy Gleason
Galapagos Brown Pelican in Afternoon Sun at Genovesa
Nancy Gleason
Galapagos Brown Pelican on Rock at Genovesa
Nancy Gleason
Swallow-tailed Gull Protecting Ground Nest on Genovesa
Nancy Gleason
Galapagos Brown Pelican Preening at Genovesa
Nancy Gleason
Juvenile Great Frigatebird in Flight over Great Darwin Bay
Nancy Gleason
Proud Juvenile Galapagos Sea Lion
Nancy Gleason
Galapagos Sea Lion Mother and Young
Nancy Gleason
Nazca Booby in Flight over Great Darwin Bay
Nancy Gleason
Sandy Galapagos Sea Lion on Beach of Genovesa
Nancy Gleason
Galapagos Sea Lion Profile Close-up at Great Darwin Bay
Nancy Gleason
Sandy Galapagos Sea Lion on Genovesa Shore
Nancy Gleason
Nursing Galapagos Sea Lion at Great Darwin Bay
Nancy Gleason
Galapagos Sea Lion Savoring Sunlight
Nancy Gleason
Galapagos Sea Lion Sings a Song
Nancy Gleason
Pair of Galapagos Sea Lions Play at Genovesa
Nancy Gleason
Pair of Joyous Galapagos Sea Lions
Nancy Gleason
Pair of Galapagos Sea Lions Play in Waves
Nancy Gleason
Galapagos Sea Lions Frolick in Lagoon
Nancy Gleason
Pair of Galapagos Sea Lions at Great Darwin Bay
Nancy Gleason
Pair of Galapagos Sea Lions in a Lagoon
Nancy Gleason
Young Galapagos Sea Lion Profile in Lagoon
Nancy Gleason
Swallow-tailed Gull Protecting Egg in Ground Nest
Nancy Gleason
Swallow-tailed Gulls Protecting Egg
Nancy Gleason
Swallow-tailed Gull on Rock at Great Darwin Bay
Nancy Gleason
Marine Iguana of Genovesa Island
Nancy Gleason
Swallow-tailed Gull Parents at Great Darwin Bay
Nancy Gleason
Swallow-tailed Gull Parents Protecting Nest
Nancy Gleason
Young Galapagos Sea Lion in Lagoon of Genovesa
Nancy Gleason
Floating Lava Gull at Genovesa Island
Nancy Gleason
Magnificent Frigatebird Protecting Chick in Nest at Genovesa
Nancy Gleason
Magnificent Frigatebird Tending Chick at Genovesa
Nancy Gleason
Galapagos Sea Lion Floats in Lagoon
Nancy Gleason
Lava Gull Profile at Great Darwin Bay
Nancy Gleason
Lava Gull on Beach at Great Darwin Bay
Nancy Gleason
Tagged Galapagos Sea Lion at Lagoon of Genovesa
Nancy Gleason
Tagged Galapagos Sea Lion on Genovesa Island
Nancy Gleason
Tagged Galapagos Sea Lion Basks in Sun
Nancy Gleason
Pair of Galapagos Sea Lions Share a Kiss
Nancy Gleason
Galapagos Sea Lion Naps at Great Darwin Bay
Nancy Gleason
Immature Swallow-tailed Gull at Genovesa
Nancy Gleason
Great Frigatebird in Tree at Great Darwin Bay
Nancy Gleason
Swallow-tailed Gull Mating on Genovesa Shore
Nancy Gleason
Swallow-tailed Gull Courting on Genovesa Shore
Nancy Gleason
Swallow-tailed Gull Courting Behavior
Nancy Gleason
Nazca Booby Egg Hatching
Nancy Gleason
Nazca Booby Guarding Ground Nest
Nancy Gleason
Nazca Booby Tending Two Eggs'
Nancy Gleason
Large Ground-finch of Genovesa
Nancy Gleason
Red-footed Booby Perched High in Tree
Nancy Gleason
Nazca Booby with New Chick
Nancy Gleason
Swallow-tailed Gull Pair Tending Egg
Nancy Gleason
Red-footed Booby Protecting Chick
Nancy Gleason