Descriptor : bicoloured tail

Monitors' tail can present a uniform colour, pattern of colours, or can be conspicuously bicolour (black first, then white): this characteristic is of interest here.

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bicoloured tail

presence

Tail black in its first half and white (or dirty white) in its second half.

absence

Tail with uniform colour, or pattern of colours (bands, ocelli, etc...).

Belongs to the group