Ornithologists seek to answer riddle of white blackbirds and pink sparrows UK

[Donna]

They are the bizarre-looking birds which defy expectations, from blackbirds which are brilliant white, to shocking pink house sparrows.
Now, following an increasing number of reports of birds with the "wrong" coloured feathers, ornithologists have launched a study to investigate what could be behind the strange sightings.

http://www.telegraph.co.uk/earth/wildlife/9014881/Ornithologists-seek-to-answer-riddle-of-white-blackbirds-and-pink-sparrows.html read on