I noticed these birds last Winter because of their unusual plumage and (not being a bird-watcher) found out they were Egyptian geese. They were back again today, so I abandoned the flower photography.
They were introduced to the UK in the late 17th Century as an ornamental bird to adorn the lakes of country estates. They are originally from sub-tropical Africa and the Ancient Egyptians considered them sacred. However, these days in their native homeland they have become a nuisance because they eat crops.
Until recently in the UK, these birds were quite rare and were mainly confined to a small area of Norfolk. The birds tend to breed in January, traditionally too cold for chicks to survive, but as temperatures have increased over the last 20 years, so too has the population of these birds and they are now found in different parts of the UK.