Interesting idea... though "Highly domesticable" is questionable. As far as I know they are considered "semi-domesticated" even today, because they are not bred in captivity. Still, they are quite tamable, and useful. How large is the North American caribou? As large as the Siberian, or more like the Scandinavian variety? They supposedly ride reindeer in Siberia...
They can easily be bred in captivity, as a number of zoos have demonstrated. They are not normally kept in captivity, though, for practical reasons. People who make a living from their Reindeer own vast herds numbering in the thousands. Since they are quite capable of living off the land and being herded, keeping such numbers inside and supplying them with food would be a colossal waste of effort.
The male Caribou is larger than the male Reindeer, but the females are about the same size. Reindeer are more stout, and this has been attributed to some breeding for use as a pack and draft animal.
Absolutely right. Male reindeer usually live apart from the herd in a solitary existence, not the sort of behaviour of a domesticated animal.
Not quite. Reindeer are extremely gregarious. The migrate in vast heards that can number thousands, or even tens of thousand animals. Outside of migrations or mating season, they do break up into smaller groups, with the females and youngsters forming common groups. The males tend to form groups of their own.
A quick picture search on google shows groups of Reindeer with multiple males and females, both in mating season and outside of it.
IIRC, caribou are the same species as European reindeer, but they have completely different social patterns and are not domesticable... if they were, the natives would have done so
I did some reading on it tonight. Caribou and Reindeer are the same species. Is is believed that all Reindeer are descended for the same heard of Caribou that was originally domesticated, over 10 000 years ago.
Some sources refer to "vast behavioral differences" without specifying. Others state that the behavioral difference is that Caribou are somewhat less social, and not tamable.
Caribou also do not make a mess of my garden, but I suspect this is more due to distance than inclination.
Attempts have been made to domesticate Caribou, but have failed. It was noted, though, that very little interest was exhibited in the domestication.
It therefore seems to me that the Caribou is identical to the root stock that the Reindeer was domesticated from.
Like the horse, the domestication seems to have been a low-probablity incident which happened only once. The Reindeer root population was likly as hard to tame as the Caribou.
Therefore there doesn't seem to be any intrinsic reason why the domestication could not have happened in North America as well.
Note also that the University of Alaska cites eviednce of domestic Reindeer as far back as 8 000 BC, around Lake Baikal. Which means we are not terribly far away in time and location to the last Beringa population movement into North America.