Sparrowhawk (scientific name: Accipiter nisus) is a small bird of prey with a body length of 30–41 cm. The female is slightly larger than the male, with broad and rounded wings and a longer tail. The male has a dark grey upperpart and a greyish brown female with a slight white tinge at the back of the head. The underparts are white or off-white , with fine reddish-brown transverse spots in males and brown transverse spots in females.
体重130-170g,193-300g;体长♂310-350mm,360-410mm;嘴峰♂11-13mm,12-15mm;翅长♂205-255mm,240-260mm;尾♂150-197mm,145-223mm ♀;跗蹠♂51-63mm,58-73mm ♀。 ♀♀♀♀♂
Asian subspecies breed in China in Daxing'anling, Xiaoxing'anling, Changbaishan, Liaoning, Inner Mongolia Hulunbuir League and Xinjiang, and winter in Sichuan, Guizhou, Yunnan, Guangxi, Guangdong and Hainan Island. During migration, it passes through Hebei, Shandong, Ningxia, Inner Mongolia, Guangdong, Fujian and Taiwan; the Himalayan subspecies mainly breeds or remains in Qinghai, northern Sichuan and Tibet, and winters in northwestern and western Yunnan.
The Tianshan Mountains in the northeastern provinces of China and northwestern Xinjiang moved south to southeastern and central China in winter, as well as to The Islands of Taiwan and Hainan. The Accipiter nisus melaschistos breeds south of central Gansu to western Sichuan and southern Tibet to northern Yunnan, and migrates south to southwestErn China in winter. It is a common forest bird.
The breeding season is from May to July. The nest is found in trees in the forest, 4-14 meters above the ground. The nest is usually placed on a branch fork near the trunk. Nests are often found in broad-leaved or coniferous trees such as medium-sized linden, red pine or larch, and are sometimes supplemented and repaired from other nests. The nest area and nest are relatively fixed and often used for many years. The nest is saucer-shaped and consists mainly of dead branches, with spruce twigs and fresh leaves such as the warp tree and the guard grass. Each clutch usually lays 3-4 eggs, occasionally as many as 5 and 6 or even 7 and as few as 2, usually laying 1 egg at 1 day interval. The eggs are oval or nearly round, the eggs are clear, smooth and spotless, 29.8 × 38.6 mm in size, and weigh 17-18 g. Females incubate their eggs, and males occasionally participate in egg incubation activities for a period of 32-35 days. The chicks are late-growing, and after 24-30 days of nesting, the chicks have the ability to fly and leave the nest.
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