I knew I'd made a mistake watching this when a St. Patrick's Day parade the escaping children become caught up with, all of a sudden bursts into a song and dance routine straight out of your worst screen musical nightmare. Up to that point 'Flight Of The Doves' had legs as an undemanding chase story about two children escaping the clutches of two wicked uncles, and trying to find the home of their grandmother in Ireland.
Ralph Nelson appears to have had no idea of what sort of film he wanted to make: one minute it's a children's adventure story, with narrow escapes galore; then it's the kind of awful comedy that filled the screens at that time, with thick police, and unutterably stupid comings and goings through a series of doors, as in a farce or a Charlie Chaplin silent; then it's pure whimsy, complete with a sunset, a sickly song from Dana, and a pass-the-bucket finale. The children aren't the only ones totally lost.
There are snatches here and there of what could have been - most of them involving Ron Moody in a variety of disguises, a la Peter Sellers or Alec Guinness, playing the part to the hilt in a barnstorming display of deliberate overacting. Without him the film would have been turned off long before the ending.
Incidentally, Nelson's previous work to this, unbelievably, was 'Soldier Blue' - another film of excess, but of a totally different sort.