Ole Jorgen Liodden / Brown pelican (Pelecanus occidentalis urinator) close up of throat pouch skin, with beak open, Galapagos.

Tui De Roy / Galapagos sea lion (Zalophus wollebaeki) feeding on tuna watched by scavengers, including, Brown pelican (Pelecanus occidentalis urinator), Great blue heron (Ardea herodias), and Sally lightfoot crab...

Tui De Roy / Galapagos sea lion (Zalophus wollebaeki) feeding on tuna, watched by scavenging Galapagos brown pelicans (Pelecanus occidentalis urinator). A group of the sea lion bulls have learnt to herd Pelagic ye...

Andy Rouse / Galapagos brown pelican (Pelecanus occidentalis urinator) juvenile flying over sea, Galapagos.

Andy Rouse / Galapagos brown pelican (Pelecanus occidentalis urinator) flying at sunset, Galapagos.

Ole Jorgen Liodden / Brown pelican (Pelecanus occidentalis urinator) on coast at sunset, Galapagos.

Pete Oxford / Brown pelicans (Pelecanus occidentalis urinator) being fed fish waste by fisherman in fishmarket, Puerto Ayora, Santa Cruz Island, Galapagos

Pete Oxford / Close up head portrait of Brown Pelican (Pelecanus occidentalis urinator) Galapagos Islands, Ecuador, South America

Pete Oxford / Brown Pelican beak (Pelecanus occidentalis urinator) Hyper saline solution dripping from the beak tip. This is a common phenomenon amongst sea birds which have a salt gland capable of removing excess...

Tim Laman / Brown pelican (Pelecanus occidentalis urinator) with chick on the nest, preening, Isabela Island, Galapagos, June

Pete Oxford / Brown Pelican (Pelecanus occidentalis urinator) Urbina Bay, Isabela Is, Galapagos

Pete Oxford / Brown Pelican (Pelecanus occidentalis urinator) Urbina Bay, Isabela Is, Galapagos