In Madagascar's Kirindy Forest, a matchstick-sized chameleon goes on an epic journey through high trees and ground floors to find a mate and lay eggs before it's too late. A water vole in the Scottish Highlands swims a lake, climbs a waterfall and scales a mountain also to find a suitor and a place to raise her pups.

Follow a conservation movement of bird-loving experts and citizen scientists as they mobilize to the challenge of understanding and saving shorebirds.