Yellow-browed Warbler
Yellow -browed Warbler (Phylloscopus inornatus )
The Yellow -browed Warbler (Phylloscopus inornatus ) is a passerine bird of the family of warblers. It breeds in Asia, in a region that extends from the east of the Urals to China. The Yellow -browed Warbler is a migrant bird that winters in South-East Asia. The species is, however, detected in small numbers every year in Europe on the coasts of North and Baltic Sea and the Middle East, especially in September and October.
Features
The Yellow -browed Warbler is one of the smallest warbler species, he has a body length of 9.0 to 10.5 centimeters. The body top is green gray covered the body bottom is dirty white. Striking is the double wing fascia that is formed by the light tips of the large and medium coverts. The head shows a long and wide, bright yellow eyes glancing over and under a dark eye stripe. The beak is thin and pointed. The legs are pinkish brown.
Voice
The Stimmfühlungsrufe are tall and thin, but relatively loud. They consist of one-to two-syllable, sweeping whistles, like " tsuii " or " tsuiist " sound about. They are somewhat reminiscent of the coal tit. The vocals are high and thin and consists of relatively short verses that sound something like " zie zwiewiest pulling " or " Tsitsi - tsui itsui -it seee ". The height and timbre is very similar to the calls.
Dissemination
The Yellow -browed Warbler breeds in the taiga zone of the eastern Palaearctic region of Yakutia and Ussuri west to the north of the Urals, where the spread narrows west of the river Ob wedge-shaped. The northern limit of the breeding habitat is located in eastern Siberia at 69 ° -70 ° N, in the Urals at 65 ° N and west of the Ob at 64 ° N.
Habitat and food
The Yellow -browed Warbler lives in open forests and shrub thickets of various kinds, such as flood plains, in the hill and mountain country or in the spruce-fir taiga. Migrant keep mainly in lowland forests, but also in other groups of trees and bushes on the beach, in parks or gardens.
Its diet consists mainly of small insects and other invertebrates, which he studied in the crown area of trees or in the shrub layer.
Hiking
The Yellow -browed Warbler is a long-distance migrant, its main wintering area is located in the subtropics and tropics of South East Asia to western and north-eastern India and Bangladesh. The departure begins from late July to early August, stragglers leave the nesting area until mid-September. He often reached in the autumn Baltic and North Seas, in some years like invasion. The median of this occurrence is for the space of Great Britain to the Baltic at the beginning of October. Winter guests who stay in the Mediterranean, partly survive and pull the spring towards the north. The return migration in the Asian main wintering grounds begins in late March. The breeding grounds until early June reached in May.
System
In the past three subspecies of the Yellow -browed warbler have been recognized. The subspecies P. i humei and P. mandellii i have, however, now split off as a separate species, the Tienschanlaubsänger. Reason for the separation were morphological differences and differences in singing. The Yellow -browed Warbler overlaps in its distribution area with the Tienschanlaubsänger. However, the two species do not reproduce with each other. Today it is believed that there was a splitting of the two species from about 2.5 million years ago. The Yellow -browed Warbler and the Tienschanlaubsänger together form a super species because of their close relationship.