Caribou feeding in winter snow

April 2nd, 2009 by

A caribou cow digging under snow for food, feeding on lichens and grasses, in winter, Wrangell - St. Elias National Park, Alaska.

 

Hey Folks,

Normally I wouldn’t post a photo of an animal with its head buried under the snow. But, for caribou, this is winter life. Caribou feed on lichens and grasses, and those lie buried, often deep beneath snow’s crust for the long winter months. Caribou have a few options to eke out their winter, and a heavy snow pack in the winter can be a tough gig for them; finding food is a mission and avoiding predators, namely, the wolf, an equally difficult, if not critical, task. So they’ll typically seek high ground, windblown ridges such as this one, where the snow packs is shallower, providing the caribou better footing for escape from the wolves, and also easier digging to find food. They have a reasonably keen sense of smell, and that’s how they find where to dig. Also, the deeper the snow, the harder it is to smell food sources underneath. The caribou bulls will use their 3rd antler, the ‘shovel’ to scrape away snow and get at the vital plantlife below, but the cows, though they do have antlers, don’t have this shovel antler, so they tend to dig out snow mostly with their hooves.  You can see the technique here:

A caribou cow uses her front hooves for digging through snow, to get at lichens and grasses to feed on, winter, Wrangell - St. Elias National Park, Alaska.

Caribou hooves are pretty unique – they’re shaped in such a way as to allow each hoof to make 4 contact points with the ground, rather than 2, as with most ungulates (hoofed mammals); this extra set of contact points allows them much better grip on icy surfaces. It’s not unusual to see caribou run out onto ice covered lakes and riverbeds when wolves come out to hunt, because the caribou usually have the advantage over such terrain. They can run on ice without slipping much better than most creatures. There is so much snow this year in the caribou range in Wrangell – St. Elias National Park that this won’t really be an issue for another few weeks. But once the snow melts and blows away, the caribou will come down off the ridges and hit the lakes, staying on the ice (the lakes surface remain frozen, usually, long after the snow is gone), but keeping a wary eye out for the wolves. Good luck to them.

Cheers

Carl

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3 Responses to “Caribou feeding in winter snow”

  1. Neil Donohue says:

    Hey Carl,
    Why don’t you use what I taught you, and rope him, break him in, and ride him around in winter. Beats skiing, snowboarding, and no shoeing.
    By the way, if you want to start a ‘Save the Lynx’ campaign’ I’d be happy to sign up for it. I can’t believe that trapping those animals in a National Park is allowed.
    Good to see you looking fit and healthy and the sun is shining, but you don’t seem to have much of a tan.

    Take Care, Dad

  2. Carl D says:

    Hey Dad,

    The reason I didn’t rope him and saddle up is because wolves chase, kill and eat caribou. I don’t wanna get too close.

    Yeah, the trapping in the park thing is a contentious issue .. for me, anyway. I understand the history of it all, and that the place was only “made” a park 30 years ago .. and people live inside the park, and in the nearby area, who have trapped here for years. So the Park Service made a real effort to allow subsistence lifestyle to continue and mesh it into the park. It’d be nice if they at least made some real effort to monitor the ‘take’, and to maybe put some areas of the park off limits to all trapping and hunting.

    Working on my tan this afternoon.

    Cheers

    Carl

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Skolai Images

Welcome to Skolai Images, nature photography blog from Carl Donohue. I'll post on a variety of topics that in some way or another relate to nature photography, including also travel and adventure photos. Thanks for visiting and feel free to add your thoughts. avatar



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