Name:Luscinia obscura
Alias:Luscinia obscura,Calliope obscura,Black-throated Robin,Blackthroat,nightingale
Outline:Songbird
Family:Passeriformes Flycatchers S.Robin
length:About 12.7 cm
Weight:15-20g
Life:No verification information
IUCN:LC
Blackthroat, foreign name Blackthroat, no subspecies.
Regarding the taxonomic status of the black-throated robin, previous scholars such as Goodwin and Vaurie (1956), Zheng Zuoxin (1958), and Vaurie (1959) all believed that the black-throated robin was just a different color form of the golden-breasted robin. Ripley (in Mayrand Paynter, 1964) divided the black-throated and golden-breasted robins into two independent species. The distribution ranges of these two robins are very different, so he agreed with this approach. However, due to the limited specimens, the information on young birds, sub-adult birds and life history is also lacking. Therefore, whether the black-throated robins and golden-breasted robins are two independent species or just two different color forms of a single species can only be determined after more specimens are obtained.
The food of the black-throated robins is mainly lepidoptera and diptera larvae.
The black-throated robins occasionally sing in the spring, during the brooding period or during migration. They can sing at night and are commonly known as nightingales, but they mainly sing after the sun rises during the day. The call is relatively simple, repeated after a short interval, drreee-drreee drreee-drreee drreeedreee huti-huti huti-huti huti-huti. There are also more ambiguous and high-pitched sounds, duriiii'hutu, drrii'hitu, drrrii'huti-huti-huti and some short trills and simple trills. The call is often mixed with low weak single or double tuc sounds.
After the black-throated thrush migrates to the breeding ground, the male bird will sing in the dense bamboo forest to establish its territory. The female bird moves deep in the bamboo forest and rarely sings. The male bird mainly moves within a hundred meters of the nest area, and there is almost no overlap in the activity range of individual male birds.
The forest type of the Black-throated Robin nest site is a mixed coniferous and broad-leaved forest, with dense Qinling arrow bamboo growing under the forest. The nests are all built in natural earth caves at the edge of the forest. The nest caves are located on a small steep slope at a certain height from the ground. The slopes of the two nest sites are 45° east-southeast and 80° east-southeast, with slopes of 85° and 75° respectively. The cave entrances are both facing 45° east-southeast, and the heights of the cave entrances from the ground are 55 cm and 80 cm respectively. The nests are close to the water source and the edge of the forest, with low tree density and low shrub coverage. There are herbaceous plants growing around the cave entrance, and the fallen leaf coverage is high. In addition, the cave entrance is perpendicular to the ground and slightly tilted upward, and the cave is basically horizontal.
The nests were built in the cave, 4.8 cm and 5.2 cm away from the cave entrance. The nest entrance was cup-shaped and woven with bamboo leaves, dead grass, moss, etc. There was no bedding inside the nest, and the bottom of the nest was covered with dead leaves, hay, etc.
The brooding period of the black-throated thrush is 11 days. The brooding behavior mainly includes warming the chicks, feeding and cleaning feces. The chick warming behavior is only completed by the female bird, while the feeding and feces cleaning behaviors are completed by both male and female parents. When cleaning feces, the parents will take away the feces of the chicks, and sometimes swallow them directly. During the period of raising chicks, the black-throated robin is alert. When feeding chicks, it does not directly enter the nest, but turns back and observes in the dense bamboo forest. After confirming safety, it quickly flies into the cave entrance. Sometimes it also lands on the ground a little far away from the nest and rushes into the cave horizontally from the grass on the side of the nest.
Listed in the IUCN Red List of Threatened Species in 2016 ver 3.1-Vulnerable (VU).
Listed in the Birdlife International World Threatened Bird List.
Listed in the "National List of Terrestrial Wildlife with Important Economic and Scientific Research Value" issued by the State Forestry Administration of China on August 1, 2000.
Listed in the "China Red List of Biodiversity" - Endangered (EN).
Listed in the "China Red List of Species" - Vulnerable (VU).
Listed in the second level of the "List of National Key Protected Wildlife in China".
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