Crossword Genius

Seabird or pig? (6)

Ross

I believe the answer is:

gannet

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'seabird' is the first definition.
(type of seabird)

'pig?' is the second definition.
The definition and answer can be both animals as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'or' is the link.

Can you help me to learn more?

(Other definitions for gannet that I've seen before include "Heavily built marine bird" , "flyer" , "Large seabird noted for its plunging dives for fish" , "Sea bird; greedy person" , "Seabird - glutton" .)

I've seen this clue in The Sun.
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