Pelecanoides – Diving petrels

At first glance, they look quite different from the large, graceful seabirds often associated with open oceans. Diving petrels are compact, with short wings, rounded bodies, and a stocky build that makes them resemble tiny penguins more than typical petrels. This unique body shape is not a coincidence. It is perfectly suited to their lifestyle, allowing them to dive and swim underwater with impressive speed and control. Their plumage is usually black on top and white underneath, a color pattern that helps them blend into the ocean when seen from above or below.

What truly sets them apart from other petrels is their ability to dive underwater in search of food. While most petrels feed by skimming the ocean’s surface, diving petrels actively plunge beneath the waves. They use their short, stiff wings like flippers, “flying” underwater to chase small fish, plankton, and crustaceans. Some species can dive to surprising depths for their size, staying underwater long enough to catch fast-moving prey. This hunting style makes them more similar to auks or penguins than to their petrel relatives, highlighting how unique they are within their group.

Despite being excellent swimmers, diving petrels are also capable flyers. Their flight, however, looks very different from the effortless gliding seen in larger seabirds. They beat their wings rapidly and fly low over the water, often in short bursts. This fast, direct flight helps them move efficiently between feeding areas and nesting sites. On land, diving petrels are much less graceful. They nest in burrows dug into soil or grassy slopes on remote islands, where they are safer from predators. These nesting colonies can be surprisingly noisy, especially at night, as birds return from the sea calling to their mates.