Which term refers to the claw of a predatorial bird?

The term that refers to the claw of a predatory bird is "talon." Talons are sharp, curved claws specifically adapted for hunting and capturing prey, making them essential for birds of prey such as eagles, hawks, and owls. These claws allow these birds to grip firmly onto their catch, ensuring that they can successfully capture and hold onto it as they feed. The design of a talon, with its pointed tip and strong structure, is an evolutionary feature that enhances a predatory bird's ability to hunt effectively.

The other terms provided do not relate to the anatomy of birds. For example, "superimpose" typically refers to placing one thing over another, "surcharged" describes an increase in the usual charge or cost, and "tenacious" pertains more to persistence or determination rather than physical characteristics. Therefore, "talon" stands out as the correct term within the context of predatory birds.