Crossword Genius

Hormone designed for coot relative (7)

Ross

I believe the answer is:

moorhen

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

'coot relative' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'hormone designed' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'hormone' with letters rearranged gives 'MOORHEN'.

'for' is the link.

Can you help me to learn more?

(Other definitions for moorhen that I've seen before include "pond bird" , "Water bird" , "Black waterbird" , "Medium-sized, blackish aquatic bird with long toes" , "Female red grouse or waterfowl" .)

I've seen this clue in The Sun.
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