Bird in grass is kingfisher (6)

I believe the answer is:

siskin

'bird' is the definition.
(siskin is a kind of bird)

'in grass is kingfisher' is the wordplay.
'in' indicates the answer is hidden within the clue.
'SISKIN' can be found hidden inside 'grass is kingfisher'.

(Other definitions for siskin that I've seen before include "Breed of finch" , "Winger" , "Yellow-green finch" , "Greenish songbird related to Goldfinch" , "Finch akin to canary" .)

I've seen this clue in The Times.

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