Meta-shading for self-advertisement in wildebeests
Links to the images that inspired this bio-insight:
http://www.wildencounters.net/
https://anikiki.files.wordpress.com/2014/11/img_4177.jpg
http://cdn.c.photoshelter.com/
Wildebeests achieve conspicuousness by means of gloss and anti-gloss of the hair rather than pigmentation, and their use of sheen is extremely varied. For example, white-bearded wildebeests are unique among mammals in relying on back-lighting to produce what is effectively a pale blaze noticeable from hundreds of metres away.
Robin and the Honey Badger, 22 March 2016