Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researchers, Jennifer Aragon, Michael Johns, and Ilana Nimz, weighing chicks taken from artifical nesting burrows near research station, South Farallon Island...

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researcher, Ilana Nimz, weighing chick taken from artifical nesting burrow near research station, South Farallon Islands, Farallon Islands, Farallon National...

Sebastian Kennerknecht / Common Murre (Uria aalge) breeding colony along coast, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Western Gull (Larus occidentalis) nesting colony near research station, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Western Gull (Larus occidentalis) incubating on nest with research sign stating the nesting pattern of this individual, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, Cal...

Sebastian Kennerknecht / Western Gull (Larus occidentalis) on nest with eggs, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Common Murre (Uria aalge) breeding colony along coast, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) artifical nesting burrows on hillside with Western Gulls (Larus occidentalis), South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, Ca...

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researcher, Russell Bradley, holding chick near artifical nesting burrow, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, Califor...

Sebastian Kennerknecht / Western Gull (Larus occidentalis) incubating eggs on nest, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Western Gull (Larus occidentalis) calling while incubating eggs on nest, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Common Murre (Uria aalge) pair courting, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Brandt's Cormorant (Phalacrocorax penicillatus) incubating eggs on nest and panting from heat, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California