Keep record now, e.g. when training flier (5,10)

I believe the answer is:

green woodpecker

'flier' is the definition.
(green woodpecker is a kind of birdanimal)

'keep record now e g when training' is the wordplay.
'when training' indicates anagramming the letters (to train can mean to grow something into a shape).
'keep'+'record'+'now'+'e'+'g'='keeprecordnoweg'
'keeprecordnoweg' with letters rearranged gives 'GREEN WOODPECKER'.

(Another definition for green woodpecker that I've seen is " flyer".)

I've seen this clue in The Telegraph.

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