The wasp black and yellow warn that she carries a sting

Advertising colouration is a biological phase denoting the colours developed by certain animals to make them stand out against their background. It is the direct opposite of camouflage. There is always a message in these colours, such as "keep away" or "mind your step". Californian wasp building nest. ... Californian wasp building nest. ... Anolis caroliensis showing blending camouflage and counter-shading. ...