common stone chat

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PAKHI DEKHUN PAKHI CHINUN # 448 (Observe the Bird and recognize).COMMON STONE CHAT..[From a Photograph of MR. RANJAN BARTHAKUR] ... WATERCOLOUR ...A4...2014... Common stonechat is the name used for the Saxicola species Saxicola torquatus when this is treated in its broad sense. It is, however, now more widely considered to be a superspecies consisting of several related but distinct species, which are outwardly fairly similar but genetically distinct and replacing each other geographically without significant hybridisation: This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.