gannet

Any of three species of large seabird in the genus Morus, of the family Sulidae. They have black and white bodies and long pointed wings, and hunt for fish by plunge diving and pursuing their prey underwater.

A voracious eater; a glutton.

To wolf down, gobble or eat (something) voraciously.

She was no longer in the company of her older sister and mother who had often scolded her for ganneting down her food.