cormorant
\KOR-mur-unt; -muh-rant\, noun:
1. Any species of Phalacrocorax, a genus of sea birds having a sac under the beak; the shag. Cormorants devour fish voraciously, and have become the emblem of gluttony. They are generally black, and hence are called sea ravens, and coalgeese.
2. A gluttonous, greedy, or rapacious person.
Coleridge was precocious and from the first displayed a voracious appetite for
books. He later characterised himself as "a library cormorant ."