They're not on the current map, but they're exactly where they've been for most of Whipsnade's history, on Bison Hill - a large paddock on the downs, a short walk beyond the penguin pool. Well worth a look, and this is where you'll see the prairie marmots, as well.
Thanks for the kind comments. And just to note, there is only the male left there now, afaik. I don't know what became of the female, but only 1.0 were listed in the 2015 Inventory in January 2015.
They're not on the current map, but they're exactly where they've been for most of Whipsnade's history, on Bison Hill - a large paddock on the downs, a short walk beyond the penguin pool. Well worth a look, and this is where you'll see the prairie marmots, as well.