Green Warbler.
A small, delicate, active, and very cheerful bird. The top of the head and back are green, the underside is yellowish, and there is one light transverse stripe on the wing. A narrow yellow stripe runs from the base of the beak to the nape.
The green warbler is a common, sometimes numerous migratory bird that nests in various habitats. It inhabits spruce, fir, larch, pine, mixed forests, and occasionally birch groves at altitudes up to 1900 m in Altai and 2700-2800 m in Tien Shan. During migration, it can be found in deciduous forests, reed thickets, plantations, shrubbery, and tall grass areas. It arrives singly or in small groups of up to two or three dozen birds, often with other warblers, in mid-April to early May.
A resident of the mid-mountain belt, it settles in mountain forests with clearings and a shrub layer. Its call is a quiet whistle, consisting of very high, hurried, and ringing whistles: “ti–psityu–psityu–psi–ti–ti–ti–ti–psi…” which lasts for 2-3 seconds. Males sing from arrival until departure. Unlike other warblers, it is extremely cautious. During the breeding season, the male sings loudly and flits energetically among the tops of large trees, stretching its neck, fluttering at the ends of branches, pecking at insects.
They nest in separate pairs at a distance of 35-100 meters from each other. The well-hidden nest is built on the ground under stones, between stones, under a clump of moss, fallen trees, or in deadwood. The nest is built solely by the female from moss and dry grass and lined with fine grass, feathers, and hair. The clutch consists of 3-7 eggs and occurs from late May to early July. Only the female incubates for 12-13 days. Both parents feed the chicks. The chicks fledge on the 12th-14th day, in mid-July to early August. There is one brood per season; however, re-nesting in case of loss of the first brood is not excluded. The autumn migration begins in late July to early August, with most birds leaving in September. The last autumn migrants have been observed in early October and even in early November.
Red Book
