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Rock-wallaby is no marsupial klipspringer

 

rock wallaby

Petrogale xanthopus photo © Peripitus 

klippies

Oreotragus oreotragus photo © Neil Strickland

 

 
The yellow-footed rock-wallaby and the Cape klipspringer are herbivores of similar body mass in habitats that are virtually identical in climate and topography – yet they show far more biological differences than similarities. This ostensible failure of the principle of evolutionary convergence can be explained by their incomparably different faunal contexts: rock-wallabies have boulders and cliffs virtually to themselves, whereas klipspringers compete with diverse herbivores and evade agile carnivores.
 
Robin and the Honey Badger, 8 January 2017

                          

i.e. more intensely pigmented than the normal colour-morp
Last modified on 20 January 2017

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