Cover head, somewhat ostrich-like American cousin (4)
I believe the answer is:
rhea
'ostrich-like american cousin' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'cover head somewhat' is the wordplay.
'somewhat' indicates the answer is hidden within the clue.
'RHEA' is hidden within 'cover head'.
Can you help me to learn more?
(Other definitions for rhea that I've seen before include "Fast runner" , "South American flightless bird - mother of Zeus" , "S. Amer. flightless bird" , "Small 'ostrich'" , "Moon" .)