With the exception of the long-billed curlew the Marbled Godwit is the largest of the "Bay Birds." These two birds closely resemble each other in coloration, but may be easily distinguished by the characteristics of the bills, which are very long. The terminal half of the bill of the curlew is curved downward, while that of the Godwit is either straight or slightly curved upward.
The geographical distribution of the Marbled Godwit includes the whole of North America, though it is infrequent on the Atlantic coast. Its nesting range is chiefly limited to the interior from Iowa and Nebraska northward to the Saskatchewan. In winter it migrates to Central America, Cuba and the northern part of South America.
In company with the long-billed curlew and some species of sandpipers it builds its nest on the grassy banks of rivers and ponds, usually in some natural depression. Occasionally, however, the nests are found on moist prairies some distance from a stream. In these grass-lined nests are laid the three or four bright olivaceous, drab or creamy buff eggs that are variously spotted or blotched with varying shades of brown. They are domestic and seemingly devoted to their fellows. When one of their number is wounded and unable to fly they will frequently remain in the vicinity, flying around the spot where lies their wounded comrade.
Dr. Coues tells us that "on intrusion near the nest the birds mount in the air with loud, piercing cries, hovering slowly around with labored flight, in evident distress and approaching sometimes within a few feet of the observer."
Its food consists of the smaller crustaceans, worms, snails, insects and their larvae. These are captured from the surface of the water, on the shore or are probed for, with the long, sensitive bills, in the soft soil of the banks or under shallow water. When feeding it moves in an easy and graceful manner. Its grace and dignity well merit the saying that "it is one of the most beautiful of the birds sought by the sportsman."
Neltje Blanchan has very aptly described the habits of this bird. She says: "It is not the intention of the Godwit to give anyone a near view of either plumage or bill. The most stealthy intruder on its domains--salt or fresh water shores, marshes or prairie lands--startles it to wing; its loud, whistled notes sound the alarm to other marlins hidden among the tall sedges, and the entire flock flies off at an easy, steady pace, not rapid, yet not to be overtaken afoot. A beautiful posture, common to the plovers, curlews, terns and some other birds, is struck just as they alight. Raising the tips of the wings till they meet high above the back, the marlins suggest the favorite attitude of angels shown by the early Italian painters."