The term 'Large Billed Bird' can be summarized as a Pelican, which is a 7 letter word. Pelican is a large water bird with a distinctive pouch under the beak. They are found on all continents except Antarctica and have a wingspan of up to 3.2 meters. They feed mainly on fish, but also eat amphibians, crustaceans, and other aquatic animals. They are known for their long life span and are considered a symbol of longevity.