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The male and female are similar in appearance, but can be distinguished by differences in back markings. The male has pure white feathers on the back of the head where the female has white blending to grey feathers. With its long legs, the Australian magpie walks rather than waddles or hops and spends much time on the ground.
Female in Melbourne. The female has a white throat and the male has a black throat. The magpie-lark is a small to medium size bird, reaching 25 to 30 cm (9.8 to 11.8 in) long when fully grown, or about the same size as a European common blackbird, and boldly pied in black and white; the weight range is 63.9 to 118 g (2.25 to 4.16 oz) for males, and 70 to 94.5 g (2.47 to 3.33 oz) for females. [15]
[29] [30] Small for the size of the bird, they are typically pale blue-green, with close specks and spots of olive brown, but show much variation in ground and marking. [31] The eggs are incubated for 21–22 days by the female, who is fed on the nest by the male. [32] The chicks are altricial, hatching nearly naked with closed eyes.
For this reason, the magpie bridge has come to symbolize a relationship between men and women. Magpies have an important place in the birth myth of Ai Xinjue Luo Bukuri Yushun, the ancestor of the Qing dynasty. The magpie is a national bird of Korea and a symbol of its capital Seoul. [12]
Incubation, by the female only, starts when the clutch is complete, and lasts 16–21 days. The nestling period is three to four weeks. Black-billed magpies in the wild have a lifespan of six to seven years. Black-billed magpies have a long history with humans, being featured in stories told by Indigenous tribes of the Great Plains. Where ...
Male (left) and female (right) magpies of Tasmania. The Australian magpie (Gymnorhina tibicen) is a medium-sized black and white passerine bird native to Australia and southern New Guinea. Three subspecies, including both black-backed and white-backed magpies, were introduced to New Zealand from the 1860s to control pests in pastures. They are ...
However, such sex differences are primarily limited to the anthropoid primates; most of the strepsirrhine primates (lemurs and lorises) and tarsiers are monomorphic. [2] Sexual dimorphism can manifest itself in many different forms. In male and female primates there are obvious physical difference such as body size or canine size.
The white-throated magpie-jay and the black-throated magpie-jay were formerly placed in their own genus Calocitta. When molecular phylogenetic studies found that the genus Cyanocorax was paraphyletic relative to Calocitta, [4] [5] the two species were subsumed into Cyanocorax to resolve the paraphyly. [6] [7] Three subspecies are recognised: [6]