Auks are often confused with penguins, but they are found only in the Northern Hemisphere and can fly.

Sea Birds

Their short wings are more like flippers, which make auks expert swimmers and divers.

Swimming Wings

Auks are known for their distinctive calls, which can be helpful to identify them in their natural habitat.

Distinctive Sound

 that can produce passenger pigeon squabs that can be raised by band-tailed pigeon parents, and then from then on, it's passenger pigeons all the way, maybe for the next six million years. You can do the same thing, as the costs come down, for the Carolina parakeet, for the great auk,

Stewart Brand: The dawn...

 almost all of them depend on the ocean for food here on brush island we find a thriving population of little auks they kind of