Flier, bit of a laugh (4)

I believe the answer is:

lark

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

This could be a double definition.

'flier' is the first definition.
(lark is a type of bird)

'bit of a laugh' is the second definition.
'lark' can be an answer for 'bit' (I have seen 'bit of fun' mean 'lark' so perhaps 'bit' could also mean 'lark'). I'm unsure of the 'of a laugh' bit.

Can you help me to learn more?

(Other definitions for lark that I've seen before include "jolly occasion" , "Flighty type" , "Bird; frolic" , "Early riser" , "Singing bird and piece of harmless mischief" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.