Wealthiest heading off, one refusing to face unpleasant facts (7)
I believe the answer is:
ostrich
'one refusing to face unpleasant facts' is the definition.
(as in an ostrich with its head in the sand)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ostrich that I've seen before include "Creature" , "Torch is held over large bird" , "He ignores the truth" , "Largest non-flying bird" , "A bird for the shirt co." .)