Taxonomy
In the dry parts of South Asia and Iran the subspecies C. s. zugmayeri is found and this has a very pale neck collar. The nominate race is found in India, Nepal and Bangladesh and has a grey neck collar. In southern India, the Maldives (sometimes separated as maledivicus) and Sri Lanka, the subspecies C. s. protegatus is darker grey. The darkest form however is the Myanmar form C. s. insolens and lacks the grey collar.
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