I've only hunted moose in my home province of Ontario - normally in the central range or north-east part of the province.
Last year I went on 3 hunts. Two with a bow and one with a rifle. The first hunt was in mid-september, we had tags for all animals, bull, cow and calves, but the weather was too warm to kick off the rut and we were over run by #%@*&% black bear.
On the second hunt we had one bull and calf tags. The weather was still warm but we had some beginnings of rut activity. I had the only sighting with a brief glimpse of an animal that I couldn't identify moving through.
On the last (gun) hunt two of us with only calf tags but the bulls and cows were running together. We didn't try calling because we weren't hunting bulls, but I suspect it would have worked - even as late in the season as it was. All in all we saw ten moose - seven of them bulls - but no calves