Мемориальная табличка в честь первой научной Печорской экспедиции 1843 года - Александру Кейзерлингу и Павлу Крузенштерну. Дом купца Суханова. Улица Орджоникидзе, 2. Микрорайон Ленина

Memorial plaque in honor of the first scientific Pechora expedition of 1843 - Alexander Keyserling and Pavel Krusenstern. House of merchant Sukhanov. Ordzhonikidze street, 2. Microdistrict Lenina

Сыктывкар, Республика Коми, Россия

Syktyvkar, Komi, Russia

Những cột đá bị phong hóa được hình một cách tự nhiên tại khu vực Troitsko-Pechorsky thuộc nước Cộng hòa Komi gần sông Pechora.

Tolka River Valley Park (TRVP)

Finglas/Cabra

Dublin, Ireland

Scientific classification

Domain:Eukaryota

Kingdom:Animalia

Phylum:Chordata

Class:Aves

Order:Passeriformes

Family:Phylloscopidae

Genus:Phylloscopus

Species:P.collybita.tristis

Binomial name

Phylloscopus collybita tristis

Siberian chiffchaff (Phylloscopus (collybita) tristis) is a leaf-warbler which is usually considered a subspecies of the common chiffchaff, but may be a species in its own right.

P. (c.) tristis, the Siberian chiffchaff, breeds in Siberia east of the Pechora River and winters in the lower Himalayas.

It is also regularly recorded in western Europe in winter, and it is likely that the numbers involved have been underestimated due to uncertainties over identification criteria, lack of good data and recording policies (Sweden and Finland only accept trapped birds)

It is a dull subspecies, grey or brownish above and whitish below, with little yellow in the plumage, and the buff-white supercilium is often longer than in the western subspecies. It has a higher pitched suitsistsuisit song and a short high-pitched cheet call.

It is sometimes considered to be a full species due to its distinctive plumage and vocalisations, being similar to P. s. sindianus in these respects.

Nominate P. c. collybita and P. c. tristis do not recognize each other's songs

Pending resolution of the status of P. (c.) fulvescens, which is found where the ranges of P. c. abietinus and P. c. tristis connect and may or may not be a hybrid between these, tristis is maintained in P. collybita

Range

Siberian chiffchaff breeds in Siberia east of the Pechora River and winters in the lower Himalayas.

Status in Europe

It is also regularly recorded in western Europe in winter, and it is likely that the numbers involved have been underestimated due to uncertainties over identification criteria, lack of good data and recording policies (Sweden and Finland only accept trapped birds).

Because of their unfamiliar appearance, British records in the 1950s and 1960s were originally thought to be greenish warblers, and accepted as such by BBRC, the national rarities committee, until the records were reviewed in the 1980s.

vocalisations

It is a dull bird, grey or brownish above and whitish below, with little yellow in the plumage, and the buff-white supercilium is often longer than in the western subspecies. It has a higher pitched suitsistsuisit song and a short high-pitched cheet call. It is sometimes considered to be a full species due to its distinctive plumage and vocalisations, being similar to P. s. sindianus in these respects.

Taxonomy

Common chiffchaffs (of the nominate race) and Siberian chiffchaffs do not recognize each others songs. Pending resolution of the status of the form fulvescens, which is found where the ranges of common chiffchaff (of the race abietinus) and Siberian chiffchaff connect and may, or may not, be a hybrid between these, tristis is maintained in P. collybita by most checklists