Colourful flier made anniversary cake appear wonderful, initially (5)
I believe the answer is:
macaw
'colourful flier' is the definition.
'macaw' can be an answer for 'flier' (macaw is a kind of birdanimal). I'm not sure about the 'colourful' bit.
'made anniversary cake appear wonderful initially' is the wordplay.
'initially' suggests taking the first letters.
The first letters of 'made anniversary cake appear wonderful' is 'MACAW'.
Can you help me to learn more?
(Other definitions for macaw that I've seen before include "Chattering cousin of a cockatoo" , "Avian chatterbox" , "Large bright parrot" , "Brightly-coloured parrot" , "Type of parrot" .)