This video from England is about Slimbridge Wildfowl and Wetlands Centre.
From British daily The Independent:
Swans stay in ‘warm’ Siberia
The late arrival in Britain of migratory birds from Russian region is being blamed on global warming, Ian Johnston reports
Tuesday, 28 October 2008
The arrival of thousands of swans fleeing plunging temperatures in their breeding grounds in western Siberia is usually one of the first signs that winter is on its way in Britain.
But wildlife experts are reporting that the swans’ 1,800-mile mid-October migration has so far failed tomaterialise, with climate change turning the once famously harsh Russian region into a more inviting winter haven for the majestic birds.
Some 300 Bewick’s swans – of the 8,000 or so which usually make the annual flight west to the UK – were expected at Slimbridge Wildfowl and Wetlands Centre in Gloucestershire by 21 October but have not yet been sighted. Such a delay is unheard of. Experts at the centre said the birds appear to have “simply stayed put for longer” as temperatures have not been cold enough to persuade them to come this far west.