Fast-moving hummingbirds are rarely still enough for you to appreciate their amazing beauty. Here is your chance to see them in rich detail by one of the world's great bird artist, John Gould.

This screensaver contains 60 images from his outstanding collection of hand-colored lithographs published in A Monograph of the Trochilidae, or Family of Hummingbirds, 1849 to 1861.

John Gould Hummingbirds keywords: john gould, birds, ornithology, hummingbird, hummingbirds, humming bird