成人快手

Tweet of the Day is the voice of birds and our relationship with them, from around the world. Sir David Attenborough presents the white-bearded manakin of tropical South America. The sound of party-poppers exploding in a forest clearing tells you that white-bearded manakins are displaying at a lek. At a carefully chosen spot each male clears the forest floor of leaves and other debris before his performance begins. The commonest display is the snap-jump. As he jumps forward he strikes the back of his wings together creating a loud snapping sound followed by an excited "pee-you" call. Snap-jumps are often followed by grunt jumps or a manoeuvre known as "slide-down-the-pole". These displays continue throughout the day, but intensify when females visit.