Owl flying close to the ground (3)
I believe the answer is:
low
'close to the ground' is the definition.
(low down and close to the ground)
'owl flying' is the wordplay.
'flying' indicates anagramming the letters.
'owl' with letters rearranged gives 'LOW'.
(Other definitions for low that I've seen before include "Inferior; moo" , "Depressed; near the ground" , "Deep sound made by cattle" , "Opposite of high" , "sound from Hereford?" .)