Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) mother nursing calf, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) male, Newfoundland, Canada

Bryan and Cherry Alexander / Aerial view of Caribou / Reindeer (Rangifer tarandus) crossing lake during summer migration. Hudson Bay, Canada, 2004.

Bryan and Cherry Alexander / Aerial view of Caribou / Reindeer (Rangifer tarandus) migrating across the tundra in summer. Hudson Bay, Canada, 2004.

Mark Raycroft / Caribou (Rangifer tarandus) male standing on autumn tundra, Canada

Jose Schell / Caribou / Reindeer juvenile portrait {Rangifer tarandus} northern Quebec, Canada September

Tom Vezo / Caribou / Reindeer calf {Rangifer tarandus} Newfoundland, Canada

Jose Schell / Male Caribou / Reindeer {Rangifer tarandus} northern Quebec, Canada, September

Nigel Bean / Caribou / Reindeer {Rangifer tarandus} walking through snow near Goose Bay, Labrador, Canada.

Jose Schell / Caribou / Reindeer {Rangifer tarandus} adult male portrait September, Northern Quebec, Canada

Jose Schell / Adult male Caribou / Reindeer {Rangifer tarandus} Northern Quebec, Canada, September

Jose Schell / Adult male Caribou / Reindeer{Rangifer tarandus} Northern Quebec, Canada. September