noun

A very large oceanic bird related to the shearwaters, with long narrow wings. Albatrosses, some species of which have wingspans greater than 10 feet (3.3 m), are found mainly in the southern oceans, with three kinds in the North Pacific.

A birdwatcher 65 million years ago could have seen relatives of today’s loons, geese and ducks, albatrosses and petrels, and gulls and shorebirds, and possibly other familiar birds as well.