Documentary series featuring the wildlife of Loch Lomond and Trossachs National Park in Scotland, filmed across one year. It is spring, and migrating ospreys return to the park. Pregnant red deer come down from the mountain tops to the lowlands to calve. On a mountainside, two big cocks fight for the right to mate in a spectacle called a lek.

Documentary series featuring the wildlife of Loch Lomond and Trossachs National Park in Scotland, filmed across one year. Autumn is when stags compete to breed, osprey chicks begin a 3000-mile migration to West Africa, salmon return to the rivers where they were born and adders give birth to live young.