In article
,
" writes:
An increase in the number of swans arriving at a nature reserve in
Gloucestershire could be a sign that the county will have a white
Christmas.

More than 150 Bewick's swans have flown from Russia to the Wildfowl
and Wetlands Trust (WWT) in Slimbridge.

More at http://news.bbc.co.uk/1/hi/england/g...re/8422544.stm

I think it's more likely that they're reacting to the recent arrival of
very cold weather in Russia.
--
John Hall "[It was] so steep that at intervals the street broke into steps,
like a person breaking into giggles or hiccups, and then resumed
its sober climb, until it had another fit of steps."
Ursula K Le Guin "The Beginning Place"