Do sparrows have white ones?

Beijing time 10, 2008 10 news, according to the British "Daily Mail" report, an amateur photographer recently took a picture of a sparrow covered in snow. Experts say that the probability that sparrows turn white is only one in a million, which may be caused by a special gene. This sparrow is white from beginning to end, which is in sharp contrast with the bird. It's really "a little white in the brown bush". However, this is not the only reason why this white sparrow is a lucky one. In recent years, the number of sparrows has dropped sharply, even the more common brown sparrows. Sparrows, once ubiquitous as a bird species, are now rare and have been listed on the "priority" list of endangered species in Britain.

The weight of the sparrow is 14.9g, the total length is 105mm, the wing length is 55mm, the wing length is 176mm and the tail length is 35mm. Primary flight feather 10, secondary flight feather 8, tail feather 12. The iridescence is grayish white, the beak keratinization is incomplete, it is light brown, and the beak base is yellow. The whole body feathers are white with light gray, the top of the head is light gray, and the flying feathers have light brown stripes at both ends. It's a chick that just came out of its nest. Other biological characteristics are similar to those of the common sparrow (Passer montanus Saturatua), except that the body feathers are white, iridescent and gray, and the body size is smaller than that of the common sparrow.

reference data

[1] Gu Huiqing. A case of white sparrow [J]. Journal of Hangzhou Normal University (Social Science Edition), 198 1, (No.S 1).

[2] Tang. On the white sparrow [J]. Bulletin of Biology, 1959, (No.6).

Dongfeng. Rare white sparrow [J]. Bulletin of Biology, 1959, (No.6).