The leucistic carrion crow is one of two doing the rounds in Sheffield City Centre. They’re an odd pair, and are well worth keeping your eyes open for around Lady’s Bridge.
There’s an even more extreme duo that hang round Brightholmlee near Wharncliffe Side. They are almost pure white, and when I first saw one of them many different possibilities of what they could be sprung to mind before carrion crow!
There’s a picture of one of the Brightholmlee birds on Penny Bun’s Flickr photostream.