Chinese Name: Wu gray Harrier Scientific name: circus pygargus English name: montagu's harrier Alias: kite, black harrier Category: Falcon-shaped head, Eagle Division, the Harrier is
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Form
Male: medium-sized (46 cm) gray Harrier. Tip black, white-tailed Harrier is slightly larger than the small and light. And white-tailed prairie Harrier Harrier and the difference between the secondary flight feathers on one, the next there are two black bands. Waist light color, but not as good as white-tailed Harrier clear. Female brown, and white-tailed prairie Harrier Harrier and no different from the light-colored collar ring, flying wings level flight feathers the next two dark stripes widely spaced. Harrier chicks than the white-tailed chick wings were long and thin, with the difference between grassland Harrier flying wingtip all dark. Iris - yellow; mouth - yellow; feet - yellow.
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Habits
Habits with other Harrier Habitat: habitat in the prairie, plain or forest edge, but also to wetlands activities. Behavior: often slow flutter in the air, fly or glide, as found in prey, the rapid dive to capture. Sounds: usually do not like to call and breeding period, when the male courtship display calls for the piercing kek, kek, kek sound. Females in the warning issued when rapid jick-jick-jick sound. Breeding: nests on the ground and grass, with a stem, made of reeds and rushes. Nesting females, the male collected material. Breeding period of 4 to 5 months. Clutch size is 4 to 5. Oval, blue and white, a little reddish brown spots or streaks points; egg size: 36 ~ 45.6mm × 29.6 ~ 37.5mm. Female incubation, incubation period 27 to 30 days, when the male incubation feeding to the female, 5 to 6 times a day.
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Distributed
Distribution: Palaearctic western and central India, Central Asia. This species is a single type of species, no subspecies differentiation. Distribution: rare migratory birds. Breeding in the western Tianshan Mountains, Xinjiang, Shandong, along the Yangtze River provinces, Fujian and Guangdong are scattered winter records.
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Status quo
Protection level: as a national-level protected animals ii. Included in cites appendix ii Environmental stress: facing grassland birds, prairie and grassland farming arid land reclamation, habitat destruction threaten population viability. These are caused by the environmental pressure groups to reduce the number of reasons.