It's really great being a bird! I can fly! (7)

I believe the answer is:

titanic

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

'it's really great' is the definition.
I can't judge whether this definition defines the answer.

'a bird i can fly' is the wordplay.
'a bird' becomes 'tit' (tit is a kind of bird).
'fly' indicates anagramming the letters.
'i'+'can'='ican'
'ican' is an anagram of 'anic'.
'tit'+'anic'='TITANIC'

'being' is the link.

Can you help me to learn more?

(Other definitions for titanic that I've seen before include "In act it became an ill-fated ship" , "Film success (1997) - ship disaster (1912)" , "Twenty one [SHIP]" , "Ship sunk by iceberg" , "Gigantic like doomed ocean liner" .)

I've seen this clue in the Evening Standard.

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