泰塔娇莺(Apalis fuscigularis，“世界鸟类分类与分布名录”没记载，姑译）是分布于东南部泰塔丘陵的一种极危鸟类。在2001年种群估计为300-650只，但这年来的野外工作显示，它的数量锐减，可能只限于一块只有120 公顷的林区，数量只有60-130只。

Taita Apalis Apalis fuscigularis is endemic to the Taita Hills, in south-eastern Kenya. It is one of the rarest birds in the world, surviving in only five small forest fragments at altitudes of between 1,500 and 2,200 m. Its known global range is less than 600 ha. In 2001, the population of this species was estimated to only be 300-650 individuals, thereby qualifying it for the highest threat category,  Critically Endangered.

Field work carried out in 2009 and 2010 with support from BirdLife International, RSPB, CEPA and Chester Zoo strongly suggests that a major population crash is underway. Compared with 2009, sighting rates in April-May 2009 had dropped by about 38%; repeated counts done in September-December 2009 and May-July 2010 showed even larger decreases, approaching 80%. This means that the global population of the apalis might now be reduced to only 60-130 individuals, almost all of which are located in a single forest, Ngangao, which is only about 120 ha.

The causes of this extremely worrying drop are unclear. Little or no illegal logging is now occurring in the Taita, and human disturbance has been significantly reduced thanks to the effort of the Kenya Forest Service and local conservation groups. The impacts of other possible factors, such as nest predation and climate change remain unknown. Nonetheless, it is clear that all the possible candidates driving this apparent crash need to be urgently studied in order to stop this species from sliding further towards the brink of extinction. Similarly, research is also urgently needed on the second critically endangered bird of the Taita Hills forests, Taita Thrush Turdus helleri, whose population has not been assessed in recent times, but might be threatened by the same factors that are already affecting the apalis.

張嘉穎 2010-10-4 13:54

很细小...无论是个体还是种群...