Swallows fly from southern Africa for the British summer
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Unseasonably warm weather has brought swallows to Scotland earlier than ever before this year, the RSPB has said.
The first of the migratory birds arrived at the
Vane Farm Nature Reserve, Perth and Kinross, on Tuesday, a day earlier than last year.
The Royal Society for the Protection of Birds (RSPB) Scotland said the early sightings of birds such as swallows and
housemartins were signs of global warming.
Four months ago a little egret arrived at the reserve by Loch Leven, raising
hopes that the species could breed for the first time in Scotland this year.
Coming of summer
However, the RSPB cautioned that warmer summers and reduced snowfall could
spell the end for established native birds such as the dotterel, ptarmigan and
snow bunting.
Vane Farm warden Dave Jones said: "As the old adage goes, one swallow does
not make a summer. However, it is a sure sign of the coming of summer and we're
seeing it earlier and earlier.
"The warm weather has encouraged a host of summer visitors to come early.
This is the earliest in the year we can ever remember having swallows at Vane
Farm.
"Housemartins seem attracted by the warmer temperatures and have been seen at
the reserve since Tuesday. Last year they didn't arrive until the end of April.
"While the issue of climate change remains a hot topic, the change in
migratory patterns does seem to delight many birdwatchers."
RSPB Scotland's conservation policy officer Clifton Bain added: "We do of
course enjoy our early swallows, but the overall effects of climate change for
wildlife are far more sinister.
"Drier summers will have more far-reaching consequences for the natural world
than simply hosepipe bans that we may face."