I'm really stuck on this clue, help much appreciated....
22d Bird not flying needs help in Canadian territory (6) - ?NA??U
It looks like it parses thus:- 'Help' = HAND in 'Canadian Territory' = NU (Nunavut) which would give NHANDU - Unfortunately that's a tarantula not a bird. There is a bird that is flightless called a NANDU but clearly it;s a letter short.