Animal found in an overhead position (4)
I believe the answer is:
rhea
'animal' is the definition.
(rhea is a kind of animal)
'in an overhead position' is the wordplay.
'in' indicates the answer is hidden within the clue.
'RHEA' is hidden within 'overhead position'.
'found' acts as a link.
(Other definitions for rhea that I've seen before include "Greek goddess of fertility - running bird" , "Fast-running flightless bird" , "South American bird resembling the ostrich" , "Fast runner" , "Flightless bird from South America" .)