Broadcast 29 November 1990, this instalment investigates the ways in which those animals that live in social groups interact with each other. The solitary eagle is contrasted with whooper swans landing in Scotland after a 1,600-kilometre journey from Iceland. Once arrived, they must battle for territory with those already there, and pairs or families are usually victorious. Attenborough uses a group of farmyard chickens to demonstrate a pecking order. A pride of lions is shown co-operating to subdue a buffalo.

Chicago trio Russian Circles return with not only their fourth and heaviest album to date - but also with Empros theyre poised to take the crown as innovators reinvigorating the staid trappings of genre. Empros picks up where the anthemic riffs and melodies of 2009s Geneva left off and injects evermore slithering rhythms amid skull-crushing heft with all the visceral intensity of Godflesh, Swans and Neurosis. Put simply, Empros is Russian Circles Master of Reality: a radical revision of both heavy and melody that is monolithic in its clarity and perfection.

Now With Amazing Effects and Sound! Enjoy the beautiful and wonderful nature whit this screensaver full of life. Embrace an environment of tranquility watching the swans swim and butterflies flying in your screen. This screensaver is special to relax at any time.