Wild Isles

BBC One London

3:50 PM to 4:50 PM

Sunday 29 September

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The wildlife that lives in Britain's freshwater environments. Atlantic salmon battle their way upstream in one of the greatest migrations on the planet, beavers slow the flow with their expert dam-building, and toadlets have to cross a killing zone patrolled by carnivorous leeches. Where rivers spread out to form beds of reeds, great crested grebes pair up in courtship ceremonies, and small agile birds of prey swoop low to catch dragonflies