by Sion Morgan
They’re normally spotted in the more exotic climes of Africa, South America and the Mediterranean. But changing global climates are bringing some unusual avian visitors to Wales, as Sion Morgan reports
From the African plains to the mountains of the Himalayas, from the wilderness of Alaska to the South American jungle, it seems the world’s most exotic birds are increasingly visiting our Welsh shores.
A number of exotic species are now appearing in our gardens and could soon change the landscape of the countryside forever.
Bee Eater
Bird watching is changing and the scale of rare, colourful and plain alien species in Wales has been revealed by the Welsh Ornithological Society (WOS).
According to their records, in the past 12 months African bee-eaters and purple herons have been seen in Anglesey, North American great white egrets in parts of the former Gwent and a stunning South American bobolink in St Davids, Pembrokeshire.
The RSPB says that the growing trend has been partly caused by the deep winter freeze across northern Europe and Russia, which drove many exotic and unusual birds into Britain’s back gardens, combined with the fact that the warm springs of the last couple of years have seen migrating Mediterranean birds being attracted further north than usual.
Daniel Jenkins-Jones, head of public affairs at RSPB Cymru, said: “With the warmer climate there has certainly been an increase in numbers of little egret, Dartford warbler, and Cetti’s warbler across the UK.
“With temperatures warming up, soon we could very well see more exotic visitors, such as the purple heron, grace the Welsh shores.”
So far this year, twitchers have been lucky enough to see a North American lesser scaup duck in Cardiff Bay. The birds typically migrate south, as far as the West Indies and Bermuda.
In Little Haven, Pembrokeshire, two months ago, an ivory gull which breeds high in the Arctic was spotted by twitchers.
A Siberian chiffchaff which usually winters in the Himalayas turned up in Sudbrook, Monmouthshire, during January.
And a month later, a great white egret, typically found in the South American rainforests, was seen in the same county.
Richard Dobbins, from Pembrokeshire Birds, said: “We see rare migrants particularly when the weather is warm at this time of year, as migrating Mediterranean birds drift further north than usual because of the rising temperatures.
“The trend depends on the weather, but certainly if we see more warm springs we will see more rare migrants.”
He added: “As far as the winter goes, it isn’t so much cold temperatures that cause birds to wander further from their natural habitat, it’s the conditions.
“Large winds can blow birds off course and into unfamiliar territories. Of course what we also see is British birds being spotted in warmer parts of Europe because of the freezing temperatures here.”
Other notable recorded sightings include the stunning purple heron, which breeds in Africa and Asia, turning up in Dwyran on Anglesey, and a black kite, common in tropical parts of Australasia, flying over Marloes Mere in Pembrokeshire.
A glossy ibis which loves warmer regions like the Caribbean was also seen at Dunraven Bay in the Vale of Glamorgan in recent months.
Scientists have previously stated that with temperatures set to rise even further in years to come because of global warming, new species from France and central Europe will migrate to the UK, putting native birds under strain as they compete for food sources.
Those species expected to come across the channel in the next few decades include the hoopoe and bee-eater, colourful birds currently only found in southern Europe, Africa and parts of Asia.
Grahame Madge, an RSPB conservation spokesman, said: "Wales is known for its birdlife, especially its magnificent seabirds, such as colonies of puffins and kittiwakes. We are fearful that these birds are predicted to decline as Britain warms. Climate scientists suggest that Britain may become home to new colonists, such as the hoopoe and bee-eater. But whether these birds can find a home in Britain remains to be seen.
"We recognise that climate change will have a huge impact on the natural world and while some species will benefit, many others will lose out. We could face a future where the bird populations of Wales could change enormously. The excitement of new visitors won’t compensate for the loss of traditionally Welsh birds."
Link: http://www.walesonline.co.uk/news/wales-news/2011/04/28/exotic-birds-fly-into-wales-91466-28595925/#ixzz1MuYUPTtL
