In Hinduism, the karma created now, the consequences of which affect future events; a type of heron native to Central and South America (5)
I believe the answer is:
agami
'in hinduism the karma created now the consequences of which affect future events a type of heron native' is the definition.
I know nothing about this answer so I can't tell whether this works.
'to central and south america' is the wordplay.
'to' becomes 'til' (I've seen this in another clue).
'central' means to look at the middle letters.
'and' is a charade indicator (letters next to each other).
'south' becomes 'ag' (I am not sure about this - if you are sure you should believe this answer much more).
'america' becomes 'am'.
The middle letter of 'til' is 'i'.
'ag'+'am'='agam'
'i' after 'agam' is 'AGAMI'.
Can you help me to learn more?
(Other definitions for agami that I've seen before include "S American trumpeter" , "Bird" .)