Hooded bird? (5)

I believe the answer is:

robin

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

'bird?' is the definition.
(I know that robin parent taxon Erithacus)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for robin that I've seen before include "Famous outlaw" , "Small brown thrush" , "Batman's companion" , "Bird - boy's name" , "Small songbird" .)

I've seen this clue in the Evening Standard.

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