birdwatchers excited

A number of southern Europe’s heron species have suddenly arrived in Britain, in an exotic influx which is exciting birdwatchers.

Mark Grantham, a migration expert at the British Trust for Ornithology thought an anticyclone over southern Europe may have influenced the arrival by pushing birds migrating from Africa too far north, but Britain’s milder weather, perhaps influenced by climate change, was probably another factor.
The Independent, 6/6/07