Albinism and leucism
Albinism 白化樹麻雀 strikes me much when seeing this photo, recalling the article "In Nepal, deformities in birds expose 'worrisome' impact of environmental degradation" (5 Jan 2024, South China Morning Post).
The full report that the article mentioned can be found on the below, in which albinism or leucism in House Sparrows are illustrated (plates f, g, h):
Pradian, N. and Shrestha, M.B. (2023). Records of avian deformities in Nepal. Sciendo. Ornis Hungarica 2023. 31(2):151-164.
這張全白化的圖片令人（類）心碎，記得今年一月份南華早報曾經報道過，文章登了一張全白化的家鴉（House Crow)，但原來在尼泊爾發現很多白化的雀鳥，原因未明，應該同環境變差有關。香港西營盤鳥友發現全白化的樹麻雀，在那裏也有，但就是家麻雀，不過同樣震撼！
