ALBINOS AND ODDITIES
Occasionally, garden birds turn up with strange plumage, such as blackbirds with white patches – or even all-white birds. The same can happen for starlings, dunnocks, wrens and sparrows. If all body parts lack pigment, they’re known as albinos, but if only the feathers are affected, they’re termed ‘leucistic’. This is caused by a genetic mutation and can make the birds a target for predators.
Leucistic birds have pigmentfree feathers