Which type of beak would be most useful to a bird that spears fish for food

Mergansers, specialized for eating fish, have sharp tooth-like structures on the edge of the bill to hold fish tightly. Hawks, owls, and other birds of prey which catch and kill live prey have sharp, "hooked" beaks. These are used to bite the skull or neck and also to tear the body into pieces small enough to swallow.

Explanation:

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Large, long, and strong beaks: Fish eating birds such as pelicans, albatrosses and seagulls have long, curved beaks to catch fish and then prevent them from escaping. The pouch on a pelican's beak helps it take huge gulps of water to store the fish in it.

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