Animals Camouflage on the Bark
Most of the animals have their reasons to blend with the nature, whether predator or prey. Camouflage is playing an important role for animals to survive by deceptive coloration. Moreover, camouflage makes it exceedingly hard to target other animal in its habitat. Owls are one of the great examples of animal camouflage. Their feathers have a pattern that similar to bark and they stay still with eye closed which make others harder to see them. This method is used to hide themselves from predator, but also use to hide themselves from their prey in order to sneak up for their food. In additional, barks are the hideout for other animals, too!
As the author of illustration I have given permission for it to be loaded on Wikimedia Commons, Creative Commons Attribution Share Alike 3.0.