This mini series is up to the benchmark-setting standard of David Attenborough BBC nature documentaries, even though not narrated by him.Each episode focuses on the birds of a different continent. The key feature of the documentary series is the bird's-eye view and the life of the birds from their perspective.The rock-steady close-up camera-work of birds high up in full flight, over fantastic scenery, as well as the bird-mounted cameras, are nothing short of amazing and leaves you wondering how on Earth they did it!The episodes are narrated by ex-Doctor Who David Tennant with his native Scottish accent. It may take a few minutes to get used to his accent, but like in "Polar Bears", his delivery is refreshing and captivating.