large long-winged warm-water seabird having a large bill with a distensible pouch for fish
"The massive pelican swooped low over the turquoise bay, its huge throat pouch expanding just before it snatched a struggling mackerel from the surface."
Any of various seabirds of the family Pelecanidae, having a long bill with a distendable pouch.
"The giant pelican swooped low over the water, its massive throat pouch stretching open to scoop up a school of fish before snapping it shut."