Crossword Genius

Old celebrity to wake up shortly, like the birds (9)

Ross

I believe the answer is:

oviparous

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

'old' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

'celebrity to wake up shortly like the birds' is the wordplay.
I cannot quite understand how this works, but
'celebrity' could be 'vip' and 'vip' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for oviparous that I've seen before include "As some layers" , "Producing eggs hatching outside the body" , "Egg-laying (birds, fish or animals)" .)

I've seen this clue in The Times.
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