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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.
When singing the male sits in what is called the slope posture—erect with the head feathers raised. [23] There are two types of slope posture, a pre-copulatory one and an ordinary one. The pre-copulatory behavior of scaly-breasted munia includes a sequence of actions. The first involves either the male or female playing with nest-material.
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]
[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.
Java sparrow is a popular cagebird, and has been introduced in a large number of other countries. Both Padda species are threatened by trapping for the cage bird trade. Many taxonomists now place this genus in Lonchura with the mannikins and munias.
The term comes from the Greek γυνή (gynē) 'female', ἀνήρ (anēr) 'male', and μορφή (morphē) 'form', and is used mainly in the field of entomology. Gynandromorphism is most frequently recognized in organisms that have strong sexual dimorphism such as certain butterflies, spiders, and birds, but has been recognized in numerous ...
[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
In these cases, the male and female will be continuously assessing each other based on sexual characteristics. In the blue-footed booby , the females tend to choose males with brighter blue feet, because birds with brighter feet are younger, and thus have greater fertility and ability to provide paternal care. [ 3 ]