Apartment by river for high-flier (6)
I believe the answer is:
condor
'flier' is the definition.
(condor is a kind of birdanimal)
'apartment by river' is the wordplay.
'apartment' becomes 'condo' (I have seen 'American apartment' mean 'condo' so perhaps 'apartment' could also mean 'condo').
'by river' becomes 'r' (abbreviation for river. I am not sure about the 'by' bit.).
'condo'+'r'='CONDOR'
'for high' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for condor that I've seen before include "Large bird of the Andes (national symbol of Peru)" , "Largest New World vulture" , "Large bird of prey" , "Great bird of the Andes" , "Large American vulture" .)