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The Java sparrow (Lonchura oryzivora; Japanese: 文鳥, bunchō), also known as the Java finch, Java rice sparrow or Java rice bird, is a small passerine bird. [3] This estrildid finch is a resident breeding bird in Java, Bali and Bawean in Indonesia. It is a popular cage bird, and has been introduced into many other countries.
Its contrasting face pattern makes this species easily identifiable in all plumages; [4] the smaller size and brown, not grey, crown are additional differences from the male house sparrow. [2] Adult and juvenile Eurasian tree sparrows undergo a slow complete moult in the autumn, and show an increase in body mass despite a reduction in stored ...
In organisms where CASI has been observed, the presence of these sex chromosomes directly influences the transcriptional landscape of individual cells, leading to sex-specific cellular characteristics. For example, in birds, studies have shown that male (ZZ) and female (ZW) cells exhibit distinct gene expression profiles even when exposed to ...
[2] [3] The type species was subsequently designated as the house sparrow (Passer domesticus). [3] [4] The name Passer is the Latin word for "sparrow." [5] A mixed group of Passer sparrows containing a Eurasian tree sparrow, a male house sparrow, and female house or Spanish sparrows, feeding on grain in the town of Baikonur, Kazakhstan
The family Estrildidae was introduced in 1850 by the French naturalist Charles Lucien Bonaparte as "Estreldinae", a spelling variant of the subfamily name. [2] [3] In the list of world birds maintained by Frank Gill, Pamela Rasmussen and David Donsker on behalf of the International Ornithological Committee (IOC) the family contains 140 species divided into 41 genera. [4]
J. Java sparrow; Javan banded pitta; Javan black-capped babbler; Javan blue flycatcher; Javan blue robin; Javan blue-banded kingfisher; Javan bush warbler; Javan flameback
Alternatively, the distribution of male and female tissue can be more haphazard. Bilateral gynandromorphy arises very early in development, typically when the organism has between 8 and 64 cells. [25] Later stages produce a more random pattern. [citation needed] A notable example in birds is the zebra finch.
[10] [11] [4] The hedge sparrow or dunnock (Prunella modularis) is similarly unrelated. It is a sparrow in name only, a relict of the old practice of calling more types of small birds "sparrows". [12] A few further bird species are also called sparrows, such as the Java sparrow, an estrildid finch.