This Secondary Area is defined by the range of the threatened Rueck's Blue-flycatcher Cyornis ruckii (classified as Vulnerable), which is known from two specimens collected in the Indonesian province of Sumatera Utara (see map, p.
|Rueck's Blue-flycatcher (Cyornis ruckii)||CR|
Recommended citation BirdLife International (2016) Endemic Bird Area factsheet: North Sumatran lowlands. Downloaded from http://www.birdlife.org on 31/05/2016
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