Auks are a group of seabirds belonging to the family Alcidae, which includes species like the puffin and the razorbill. They are primarily found in the northern hemisphere, especially in cold coastal regions. Auks are known for their distinctive black and white plumage, short wings, and strong swimming abilities, which they use to catch fish underwater. These birds are excellent divers, often reaching depths of over 100 meters while foraging for food. Auks typically nest on cliffs or rocky shores, laying one or two eggs in a simple scrape. Their populations are affected by climate change and overfishing, which impact their food sources.