Albino birds are birds missing some or all of their normal pigmentation.
Many still have normal coloured eyes, bills and legs, although some are completely white.
More than 160 species of British birds have shown signs of albinism, according to the RSPB.
Some birds are more prone than others:
- Thrushes (such as blackbirds) are the most common, making up 29% of the recorded cases.
- Crows (including rooks and jackdaws) account for 11%.
More top news
Finley Thomas was found motionless and looking "ghostly" in colour by paramedics at his home in Tonypandy.
Grass pollen is about to take over from tree pollen as the main cause of any hay fever-related sniffles!
The National Library of Wales has launched a competition to design an accurate replica of its building.