This video from Ireland says about itself:
Two Cattle Egrets that were found near Redbarn on 3rd December 2007. These are the first in the county since 2005.
From British daily The Independent:
Egrets? We’ve had a few
Rapidly spreading bird breeds in UK for first time as temperatures rise to warmer temperatures
By Michael McCarthy, Environment Editor
Britain has a new species of breeding bird, it was announced yesterday – the cattle egret, a white heron which has spread out from Africa across the globe.
Warmer temperatures are thought to have encouraged the bird to expand its range northwards through Europe, and it has been seen in Britain in recent years.
Now, a pair of the birds, resplendent in the bright orange-buff plumes on the head and breast that signify they are breeding, have successfully raised at least one chick in a tree nest in an undisclosed location in Somerset, and it is thought that more will follow in coming years.
It is closely following the spread to Britain of a related species, the little egret, another white heron that began wintering in numbers here in the 1990s, and first bred on Brownsea Island in Poole, Dorset, in 1996.
Subsequently little egrets, which have a black bill as opposed to the cattle egret’s yellow bill, virtually doubled their breeding numbers every year and there are now hundreds of pairs nesting across Britain.