How crow and dove move perhaps or fly sky high? (3,6)

'how crow and dove move perhaps' is the definition.
I can't tell whether this definition defines the answer.

'fly sky high?' is the wordplay.
'fly' becomes 'eyerhyme' (I am not sure about this - if you are sure you should believe this answer much more).
'high?' suggests taking the first letters (I've seen 'highest of' mean this (top letter - down clues only)).
The initial letter of 'sky' is 's'.
'eyerhyme'+'s'='EYE RHYMES'

'or' is the link.