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White Wagtail

Motacilla alba (Linnaeus, 1758)

Белая трясогузка

2015-07-04
Altacheiski res. Buryatia
© Vadim Ivushkin

Description

The White Wagtail is sparrow-sized but very slender bird. It is colored in black, white and grey. The male has black crown from the forehead to nape, the female's crown is usually grey or black on fore-crown only. The male has plain black bib from the chin to upper breast; female sometimes has white chin and throat, its black bib is shorter below. Some females are similar on males; with all black crown and large plain bib. In autumn plumage general colors remain; but black bib becomes the crescent-shaped patch. The forehead of females becomes grey, with black mottles on males and dark females; the crown becomes more or less grey; the remained black color becomes browner. Juveniles on first plumage are brownish-grey with off-white abdomen. The color of juveniles is quite variable; it is easy to mix up them with juveniles of Yellow and Citrine Wagtails. But young White Wagtails lack the pale supercilium fore eye and the fine rusty tinge. in autumn the black bib distinctly appears; the grey color becomes purer as at adults. Weight 17-27 grams, length about 18, wing 8,2-9,6, wingspan 25-30 cm.

Biology

The White Wagtail is common breeding migrant. Inhabits open areas often near water; flooded meadows near little forests and human settlements in steppe. During migration occurs in reed beds, where it roosts, and in foothills up to 1700 m. Appears early – mid March in southern areas, and end March – early April in northern ones, in flocks of several dozen birds. Migrate mostly mid March to mid April, last migrants occurs mid – end May. Breeds in separate pairs at 35-200 m one from another. Males appear before females and occupy the territory; but some pairs form during the migration. Nests in the shore banks; on the ground under shrub or root shelter; in tree cavities on 1-4 m from the ground; under the bridges and in the cavities of constructions. Both partners construct it from thin twigs, dry grass, moss and rootlets and line with plenty of hair for 3-25 days. Clutches of 3-8, more often of 5-6 eggs are laid early May – early July. Both parents incubate for 12-14 days and feed juveniles, which fledge at 14-15 days, early June – mid July. Most pairs are one brooded. Repeated breeding after the nest losing is very common. Autumn migration begins late August, most birds leave in September. Last autumn migrants recorded mid – late October. On Chardara reservoir one bird observed 18-21 December 2003.

Subspecies

Motacilla alba alba (Linnaeus, 1758)

Motacilla alba dukhunensis (Sykes, 1832)

Motacilla alba ocularis (Swinhoe, 1860)

Motacilla alba baicalensis (Swinhoe, 1871)

Motacilla alba leucopsis (Gould, 1838)

    Description. The main features: black mantle, black bib not expanded in chin and throat.
    Distribution. Distributed in Far East. Probably breeding range covered parts of Siberia in upper Amur river. Vagrant birds were recorded up to Trans-Baikal area.

References

supplement

subspecies

Motacilla alba alba
(Linnaeus, 1758)
Motacilla alba dukhunensis
(Sykes, 1832)
Motacilla alba ocularis
(Swinhoe, 1860)
Motacilla alba baicalensis
(Swinhoe, 1871)
Motacilla alba leucopsis
(Gould, 1838)

hybrids

Motacilla (alba x personata)

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unidentified birds


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Игорь Фефелов: У этой верх , впрочем, тоже местами оливково-бурый...

2024-11-19

Сергей Л. Волков: Думаю, это восточносибирская чайка. На Витиме я похожих встречал. Возможно, и фото найдется, поищу.

2024-11-17

Анна Ясько: Теперь понятно.

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