The term "furcula" refers to a forked structure found in the skeletons of some animals, particularly birds. It is commonly known as the wishbone and is formed by the fusion of two clavicles. The furcula plays a crucial role in the mechanics of flight, providing support and flexibility to the bird's chest during wing flapping. In addition to birds, the furcula can also be found in some reptiles and amphibians. In these animals, it serves a similar purpose, aiding in movement and stability. The structure is an interesting example of how evolution has shaped the anatomy of different species for their specific needs.