Treecreeper

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Treecreeper
Common Treecreeper (Certhia brachydactyla)

Treecreeper ( Certhia brachydactyla )

Systematics
Subclass : New-jawed birds (Neognathae)
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
without rank: Passerida
Superfamily : Certhioidea
Family : Treecreeper
Scientific name
Certhiidae
Leach , 1820

The treecreepers (Certhiidae) are a family of small passerine birds (Passeriformes), which move upward in a characteristic manner jerkily on tree trunks and look for tiny arthropods between the crevices of the bark . There are two genera, the true treecreeper ( Certhia ) occur in Europe and Asia from Portugal to Japan and in the northern Maghreb , the two species of regular climbers from the genus Salpornis , which have long been listed as a single species, live in Africa south of the Sahara or in India .

features

Treecreepers are small, their tweezers beak slightly bent downwards. Their plumage is spotty brown, lighter underneath, often whitish. The sexes do not differ. The tail feathers of the actual tree creepers are stiffened and pointed. During the moult , they are changed one after the other so that the tail always retains its function as a support tail.

Way of life

Treecreepers only move upwards on tree trunks and then fly to a different location at the bottom of the previously searched trunk or to another tree. They sleep in shallow bark hollows, which they enlarge with their beak, in winter also in groups. Their breeding grounds are the crevices of tree trunks or are located behind flaked bark. The nest is cup-shaped. The eggs are white, with red-brown spots ( Certhia , 3 to 9 eggs) or light blue-green with black or purple spots ( Salpornis , 2 to 3 eggs) and are incubated for 14 to 15 days. The young birds leave the nest after 15 to 17 days.

Genera and species

There are ten types:

literature

Web links

Commons : Treecreeper (Certhiidae)  - Collection of images, videos and audio files