Continuity mistake: In the scene where Terry is in the coop with all the dead pigeons, he is holding a dead pigeon in one of his hands, and he grabs the hook with the other hand. But when he stands up the pigeon and the hook have switched places.
Continuity mistake: In the scene when Terry is in the coop talking to the detective, watch the rubber leg bands for the birds that he pulls off the wire and puts on a string.
Continuity mistake: In the taxicab scene when Charley threatens Terry with a gun, it is obviously a toy or a starter pistol that shoots blanks. When Terry appears in the Bar scene with what is supposed to be the same gun, it has become a very real .38 snub nose Detective Special.
Continuity mistake: In the scene where Terry is travelling in the back of the car with his brother Charley then hops out his exit is shown from outside the car. He gets out the rear passenger side door but it is clear from the in car shots Terry is sat behind the driver and so would have to climb over Charley to get out the rear driver side door.