Cherry-throated Tanager
The Rubinkehltangare or Rotkehltangare ( Nemosia rourei ) is a very rare songbird of the family of Tanagers. It is endemic in Espírito Santo, Brazil, and was 1870-1941 and 1941-1998 to be lost.
Description
It reaches a length of 14 cm. The wing length is 8.5 cm and the tail length of 6.2 cm. The top has an ash-gray color, the back is darker. The belly is white. Tail and wings are black, with the large upper wing-coverts have a bluish tinge. The inner secondaries have a black interior Drive and a gray outer webs. A broad, dark eye stripe runs from the front through the region of the eyes and ears to the back of the neck. The hood is gray. Chin and throat are characterized by a cherry-red tint, which extends to the center of the chest. The iris is orange, and pink legs. Their song consists of a complex series of thin double trills and whistles.
Dissemination
Their occurrence is currently limited to a breeding area of 31 square kilometers in the region Fazenda Pindobas IV in Espírito Santo. She used to be widespread in the states of Espírito Santo, Minas Gerais and Rio de Janeiro.
Way of life
Until its rediscovery in 1998 on life was not known. Today we know that it occurs in the canopy of humid mountain forests at altitudes 900-1100 m above sea level. The birds go in the crowns of tall trees in search of food. To the edge of the forest towards can also be observed in lower tree regions occasionally. She seems to prefer branches with moss and lichen growth. Frequently it is found in flocks with other species of birds. Their diet consists of arthropods, apparently. Nestbauten were observed in late November.
Rediscovery and hazard
The Rubinkehltangare was a long time only by a single male specimen known that 1870 was discovered by the bird collector Jean de Roure According to company information Muriahié on the north bank of the Rio Parahyba do Sul, Minas Gerais and the Swiss ornithologist Carl Jerome Euler at the German ornithologist Jean Louis Cabanis was sent to the Museum of natural History in Berlin.
Today is theorized that the origin of the holotype not Muriahié, but probably Macaé in Rio de Janeiro might have been because the specified elevation data from Muriahié of 210 m do not coincide with those of today. 1941 Rubinkehltangare by Helmut Sick was rediscovered for the first time, which was observed in Itarana in the region of Espírito Santo Jatibocas eight copies. Then she stopped again lost until it was in 1995 by the ornithologist Dereck A. Scott another sighting. Scott, however, was not sure whether he had really discovered this way. On 22 February 1998 it finally succeeded in six Brazilian researchers ten copies of Rubinkehltangare in the region of Fazenda Pindobas IV in Espírito Santo rediscover, to photograph and record their vocals.
Due to the destruction of their habitat, the Rubinkehltangare is still under threat of extinction. Large parts of its former distribution area are destroyed by deforestation. BirdLife estimates its inventory between 50 and 250 copies.