That word 'regular' is contentious and I'm not talking grammatically. Some people say you can fly your redtail solely on weekends; because their metabolism is so efficiently slow, you almost can't do otherwise.

I don't want to directly say no to that, but the perfectionist falconer in me says if weekends is all you can manage, you shouldn't be in falconry until you can devote more time.

In compromise I will say that flying at least 3 times a week has distinct advantages. The training goes much, much faster. The bird doesn't get as bored. It stays in better condition. And once you are gamehawking, the more often you fly, the hawk both learns more and will become a more consistent hunter.

I had a tiercel redtail that I slacked off with. Our outings fell to twice a week. The bird became less controllable -- he went up to poles and stayed there and wouldn't come down until he spotted a jack 1/3 mile away. Then he would go out and catch it. Lowering his weight made NO difference. So I made the time to fly him at least 4 days a week. Lo and behold: he came back to staying with me and our partnership returned to a normal level.