Sumatran bluecatcher

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Sumatran bluecatcher
Systematics
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
Family : Flycatcher (Muscicapidae)
Subfamily : Niltavinae
Genre : Cyornis
Type : Sumatran bluecatcher
Scientific name
Cyornis ruckii
( Oustalet , 1881)

The Sumatran blue flycatcher ( Cyornis ruckii ), sometimes referred to as the Ruecks blue flycatcher , is a species of bird from Sumatra of which only four specimens are known.

description

The Sumatran blue flycatcher reaches a length of 17 to 18 centimeters. The male is predominantly glossy indigo blue. It is black-blue between the eyes and the beak and between the ear covers. The wings and tail are lined with dark blue. The throat is light indigo blue, the chest is radiant dark blue. The abdomen and the under wing covers are whitish and slightly bluish in color. The flanks are blue-gray. The underside of the female is chestnut brown. The rump, the upper tail covers and the tail are reddish chestnut colored. The belly is white. The chest is dirty reddish brown. The color becomes lighter towards the throat. Both sexes have a black beak and dark eyes. The legs are lead colored. In the young birds, the forehead, the eye ring, throat and chest are dirty light chestnut brown. The top shows yellowish-brown swabs. The middle of the abdomen is whitish.

status

In the 19th century, the bird collector M. Rueck, after whom the species is named, claims to have collected two specimens in Kesang , Malacca , on the Malaysia peninsula , which are now kept in Paris . Between 1917 and 1918 the Dutch bird collector August van Heijst collected two more specimens and brought them to the Zoological Museum of the University of Amsterdam . It was a young female and an adult male. The two specimens were originally described as Cyornis vanheysti . The site was secondary lowland forests in the Medan area in northern Sumatra. A comparison of all four museum pieces in 1928 came to the conclusion that all specimens belonged to the same species. Today, however, the location of Malacca for the first two specimens must be viewed as doubtful, as the Sumatran blue-flycatcher was not found in Malaysia despite an intensive search in the 1920s.

The habitat of the Sumatran blue flycatcher has been severely damaged by clearing. It is classified by the IUCN as "critically endangered" (threatened with extinction). Since 1972 it has been a nature reserve under Indonesian law. It is listed in Appendix II of the CITES Agreement.

literature

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