![]() In 1973, HM drew BB readers' attention to the westward expansion of the Red-flanked Bluetail Tarsiger cyanurus (Mikkola 1973a,b). The changing status of this species in the rest of Europe over the same time period is discussed also. ![]() Based on this revision, the List of Birds of the Czech Republic was updated, currently including altogether 397 species in the occurrence categories A, B and C (as of 31 December 2018).ĭata are presented to illustrate the population increase and expansion in the breeding range of the Red-flanked Bluetail in Finland during the past 40 years. ![]() The character of occurrence of the respective species in the Czech Republic since the year 1800, with regard to its occurrence in the neighbouring countries, is also described. In the overview, a chronological list of accepted and rejected records (including rationale) and the international category of occurrence are given for each revised taxon. ![]() Identification as well as plausibility of the data on occurrence circumstances were assessed. Altogether 274 records were revised, many of them for the first time in the history of research of bird fauna of the Czech Republic. Purpose of this work, rare species were defined as those in which the number of occurrence records did not exceed 10. The revision was carried out by the authors of the paper in the years 2002–2019. If you have bird images, video or audio files that you'd like to share with a large and (mostly) appreciative international audience here at The Guardian, feel free to contact me to learn more.Results of a systematic revision of occurrence of rare bird species in the Czech Republic, both recent and historical data (including voucher material) since the year 1800, are summarised. You are invited to review all of the daily mystery birds by going to their dedicated graphic index page. Originally, the orange-flanked bush-robin and its close relatives were placed into the thrush family Turdidae, although these birds are now thought to be chats (subfamily: Saxicolinae) that are part of the Old World flycatcher family. The one thing that appears consistent is that the orange-flanked bush-robin was never been placed into Erithacus.īut the confusion regarding the placement of the orange-flanked bush-robin extends beyond its generic placement, too. In fact, a number of taxa were dumped into one genus or the other, or the Luscinia was merged into Erithacus. There is a lot of overlap between these two taxa, which some authorities merge.įurther, as if that isn't confusing enough, authorities have long been confused as to precisely where Luscinia ends and another genus, Erithacus, begins. Luscinia is a genus comprising eleven species of nightingales and their relatives, also in Muscicapidae. Even though Tarsiger forms a distinct monophyletic group, it is sometimes subsumed into the related genus Luscinia. These birds are small, mostly brightly coloured insectivorous birds native to Asia and northeastern Europe and most of them are reside in the mountains. Tarsiger is a genus comprising six species of passerines in the taxonomic family, Muscicapidae (Old World flycatchers). The orange-flanked bush-robin is often placed into the genus, Tarsiger, although its placement is dependent upon whom you are arguing with at the moment since it appears that the authorities are more or less equally split regarding this bird's relationships. The taxonomy of this species is confusing. Here's a nice audio recording of a singing male orange-flanked bush-robin, accompanied by a photograph (recorded in Lieksa, Pohjois-Karjala, Suomi/Finland uploaded 10 January 2010): Orange-flanked bush-robins are shy, often remain hidden, even whilst singing. The female lays up to four pale blue eggs per clutch. They nests in holes in bank sides or under tree roots or logs. They'e recently been showing up in Great Britain, and are now are popping up in western Alaska, too. They breed in mixed coniferous forests of northern Asia and northeastern Europe, all the way from Finland to Kamchatka and into Japan. This small insectivorous songbird is migratory, wintering mainly in northern Asia, India and Taiwan. Response: This is an orange-flanked bush-robin, Luscinia cyanura, probably a first-winter male. Why? Can you identify this bird's taxonomic family and species? Is it male or female? Question: This small Chinese mystery bird is showing up in the most unlikely places all over the world. Image: Marie-Louise Ng, 11 February 2012 (with permission, for GrrlScientist/Guardian use only).
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