Here's your link without the surveillance: https://www.youtube.com/watch?v=8XToPq9lsOM
I'd recommend Leila Philip's Beaverland: How One Weird Rodent Made America. It's a great work of narrative science writing.
I think we deeply underestimate the profound impact beavers had on the landscape in North America. We truly live in a post-beaver geography. The beaver hat fad in Europe was the primary driver of their population going from hundreds of millions to less than 100,000.