Green warbler
Green warbler | ||||||||||||
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Green warbler ( Phylloscopus trochiloides ) |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Phylloscopus trochiloides | ||||||||||||
( Sundevall , 1837) |
The green Laubsänger ( phylloscopus trochiloides ) is a small songbirds from the family of Laubsänger-like (Phylloscopidae). It inhabits the middle and southern taiga as well as mixed forests from eastern Central Europe to the Pacific and also montane coniferous forests of the Central Asian high mountains. Green warblers migrate long distances and overwinter in India . The species has expanded its area significantly to the west in the last few decades, the western limit of distribution currently runs through Mecklenburg-Western Pomerania .
description
Appearance
Both sexes look the same. The species is reminiscent of the wood warbler in appearance , but is a little smaller and considerably stoutier. The back is olive green, the belly side gray-white. The eye stripe is dark, above it runs a long yellow over-eye stripe, which reaches almost to the back of the head, often widened at the end and curved upwards. The legs are brown, in contrast to the similar wandering warbler ( Phylloscopus borealis ), which has lighter, golden-yellow legs. The lower bill is lighter than the upper bill. Green warblers have a small, white wing stripe that is often barely visible. The birds are about 10 centimeters long with a wingspan of 15 to 21 centimeters. They reach a weight of about 8 grams.
singing
The call is usually a clearly two-syllable "zli-wit" and is similar to the calls of the white wagtail . The singing is high and piercing; it consists of a short, somewhat choppy stanza with a short pause in the middle and is sometimes reminiscent of the song of the wren or the coal tit .
habitat
Loose deciduous, mixed or coniferous forests, woody plants, tree plantings, also in parks and gardens. He lives hidden and is mostly in the treetops.
food
The diet consists of small insects, spiders and mollusks .
Brood
One clutch a year. The nest is built on the ground or in bushes near the ground. It has a spherical shape with the opening from the side and consists of moss, twigs and leaves.
status
Due to the very large distribution area and a global population increase, the species is classified by the IUCN as not endangered ( least concern ).
Specialty
When observing the green warbler population in West Asia , an allopatric speciation was documented: Two green warbler populations on the eastern edge of the Tibetan plateau cannot cross with each other, but due to a narrow band they form a common habitat together with other subspecies around Tibet and the Himalayas Ring species .
literature
- Urs N. Glutz von Blotzheim and Kurt M. Bauer: Handbook of the birds of Central Europe. Volume 12/2: Passeriformes. Part 3: Sylviidae. Aula-Verlag, Wiesbaden 1991.
Web links
- ORF: The way to independent art
- BBC News: Songbird shows how evolution works
- Phylloscopus trochiloides inthe IUCN Red List of Threatened Species 2018.1. Listed by: BirdLife International, 2016. Retrieved September 10, 2018.
- Green warbler feathers