Human activity can have a huge ripple effect on wild species - learn how activities such as human development and the introduction of domestic sheep can wreak havoc on native populations. Filmed over a two year period in the rare...

The potentially devastating effects of disease on the Bighorn poulation in Chilcotin. Filmed over a two year period in the rare grasslands of the Chilcotin in British Columbia.

Sierra Nevada bighorn sheep are the rarest mountain sheep in North America. After the population dropped to around 100 animals in 1995, this unique sub-species was listed as an endangered species. In the spring of 2015, these charismatic...