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Anhingidae
On the underside of the cervical vertebrae 5-7 is a keel, which allows for muscles to attach to form a hinge-like mechanism that can project the neck, head and bill forward like a throwing spear. After they have stabbed the prey, they return to the surface where they toss their food into the air and catch it again, so that they can swallow it head-first.
fresh water lakes, rivers, marshes, swamps
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