![](http://www.alamy.com/thumbs/6/F71EE9A9-D6D6-4EAD-AF7B-00CD21C930EF/BWWGG3.jpg)
Podarcis muralis male colour colour pattern herpetology research identification common wall lizard yellow polymorphism morph
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Keywords: adult, animal, animals, colour, common, europe, european, herpetology, identification, lizard, lizards, male, morph, muralis, nature, pattern, podarcis, polymorphism, reptile, reptiles, research, wall, wildlife, yellow