Garden Answers (UK) - - Wildlife -

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

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