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Species with white coats for camouflage—like snowshoe hares and snowy owls—could be at higher risk of predation, while polar bears and Ussurian tube-nosed bats may have fewer options to build their snowy dens.

But shearwaters, as well as petrels and albatrosses, are part of a class known as tube-nosed seabirds, with tubular nostrils and an excellent senses of smell.

They have more recently done other experiments, which show that shearwaters and the other tube-nosed birds, like petrels, albatrosses, and fulmars, are dependent on smell but not only smell.

The mammal gained its nickname due to a likeness to the Star Wars character, but a University of York biologist has named it the hamamas tube-nosed fruit bat after the Papuan word for 'happy'.

Body size effects and rates of cytochrome b evolution in tube-nosed seabirds.