Creature camouflages another one (5)

I believe the answer is:

heron

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

'creature' is the definition.
(heron is a kind of creature)

'camouflages another one' is the wordplay.
'HERON' is hidden in amongst the letters.
However, I am uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for heron that I've seen before include "Large British wading bird" , "Wader" , "Rhone (anag) - bird" , "Wading bird with long neck and legs" , "flier" .)

I've seen this clue in The Mirror.

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