What is keel in birds?

Keel, also known as the breastbone, is a prominent bone that extends from the base of a bird's neck to the tip of its sternum. It serves as an attachment point for the bird's flight muscles, allowing it to power its wings properly.

The size and shape of the keel can vary depending on the bird's species, with larger and more powerful flyers having a larger, more pronounced keel. The keel is also an important anatomical feature for identifying bird groups, with flightless birds typically having a less developed or absent keel.

In addition to its flight-related functions, the keel also protects the bird's internal organs and plays a role in respiration. The strength and condition of a bird's keel can provide valuable insights into its overall health and fitness.

The term "keel" is also often used to refer to the lowest edge or point of a bird's body, particularly with regard to waterfowl and other aquatic birds. This keel helps these birds to stay upright in the water and provides stability during swimming and diving.