It can't fly, and may hear amiss (4)
I believe the answer is:
rhea
'it can't fly' is the definition.
(I've seen this before)
'may hear amiss' is the wordplay.
'hear' anagrams to 'RHEA'.
However, I'm not sure how this is indicated.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for rhea that I've seen before include "South American bird resembling the ostrich" , "Flightless bird -- satellite of Saturn" , "New World flightless bird" , "Flightless bird from South America" , "Moon" .)