Published in HBW Volume 11 on page 573.
Original HBW caption:
The Yemen Warbler is a restricted-range species occurring in the south-west Arabian mountains, which straddle the border of Yemen and Saudi Arabia. It is resident in acacia and juniper woodlands at 1500–2900 m, but these are rapidly being cleared and degraded, especially through the unsustainable use of foliage and wood for fodder, fuel and building materials. Although this warbler is locally common, it is thought to number fewer than 10,000 individuals, and it is listed as Vulnerable. Until recently it was grouped with the babblers (Timaliidae) in the genus Parisoma, but this has now been shown to nest within the genus Sylvia.