March Of The Dinosaurs

March of the Dinosaurs is a CGI movie which has appeared on television and was released on DVD on 27 May 2011. It was made by Impossible Pictures, the same company that created the Walking with... series and Primeval. Set 70 million years ago in the Cretaceous in North America, the film follows the journey of a young Edmontosaurus named Scar and his herd as they migrate south for the winter. This film depicts recent findings about Dinosaurs, such as Tyrannosaurs with feathers and hunting packs, dinosaurs in the snow and migrating.

It shows a 1000-mile autumn migration of Edmontosaurus and Pachyrhinosaurus from their summer grazing in northwest Canada (then well inside the Arctic Circle, so that the winter night and summer day were each 4 months long) to their winter grazing in the southwest USA, and the young Troodon which had to stay and endure the Arctic winter. The hazards met are land and water predators, an arctic blizzard, thin ice, crossing a foodless volcanic wasteland, a lahar, and a wide river inhabited by predators. All the scenery and vegetation are CGI.
The DVD says that this is inspired by recent dinosaur fossil discoveries in the Canadian Arctic, and that the Arctic CGI trees are modeled on Sequioa.
The film begins on a summer's day in Northern Canada (inside the arctic circle) with a herd of Edmontosaurus and an Edmontonia feeding on the lush vegetation that grows all around them. Scar, a young male Edmontosaurus, enjoy his life in the arctic forests with his extended family, he comes across a young immature male Troodon named Patch, who has been feasting on baby Edmontosaurus all summer, but now they're too big for him and he's having a tough time catching prey. And the plentiful food for Scar is ending as well, as the dark, cold Arctic winter is approaching.