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http://www.agf.gov.bc.ca/apiculture/factsheets/
The amout of food for winter is at same level here but bigger in Canada. They recommend in Canada 35-45 kg sugarsyrup (65%) for winter and we use in Finland 20 kg as dry sugar.
We have here insulated winterboxes. Canadians have mostly noninsulated solid wood .
When I had 3 cm solid wood deeps during winter, food consumption was 50% bigger than nowadays in styrofoam boxes.
45% x 0,66 = 30 kg. ... Figure matches with that figure 20 kg + 50% =30 kg
Our winter is longer than in Canada.
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i was told yesterday that canadian beekeepers are the best in the world in terms of the quantity of cololies they`re dealing with. like some folks in the industry have up to 10 000 colonies. is that true?
http://www.honeycouncil.ca/
here is one link. if you don't find the info on here, you might find a link that leads to it. also search "canadian beekeeping". there a many more links. maybe some of our canadian members will have other ideas for you.