Types of Pelican in South Dakota

American White Pelicans in adult plumage are unmistakable: brilliant white body and neck, with black primary feathers visible on the wings when flying. Adult males show a yellowish pouch and often an orange-yellow bill in breeding season. Brown Pelicans are smaller, with brown and gray plumage on the head, neck, and back, and are primarily a Gulf Coast and ocean species. They dive from the air to catch fish, whereas American Whites feed by dabbing their bills in the water from the surface. The size difference alone rules out misidentification: American Whites weigh 7 to 15 pounds, while Browns are lighter and more compact.

Brown Pelicans are vagrants to South Dakota, appearing only as rare wanderers far outside their normal range. Only two confirmed sightings exist in the iNaturalist database, making them accidental visitors rather than regular migrants. When a Brown Pelican does appear in the upper Great Plains, it is usually the result of unusual weather, seasonal disruptions, or individual birds dispersing after breeding season on the Gulf. If you believe you have seen a Brown Pelican in South Dakota, photograph it carefully and note the exact date and location, as such sightings are scientifically valuable.

American White Pelicans appear most reliably in April and May, when northbound migration brings hundreds through the state. April sightings alone account for 110 observations, while May has 104. Numbers remain significant in June with 76 records as birds settle into breeding areas. July and August see lower activity as pelicans concentrate at nesting colonies, but sightings still occur. By September, southbound movement begins, with October and November showing scattered observations. Winter sightings are rare, with only a handful of confirmed records in December and January, indicating nearly all pelicans have left the state.

Immature American White Pelicans lack the pure white plumage of adults. Young birds in their first year show a grayish-brown wash on the back and neck, with darker feather tips giving a mottled appearance. The bill is grayish rather than yellow or orange, and the facial skin is dull. Non-breeding adults also lose much of the golden and orange coloring on the bill and facial area that makes breeding birds so striking. Over the course of two to three years, pelicans gradually acquire adult plumage. In South Dakota, you are likely to encounter both adults and younger birds during migration, so comparing white and brown forms in the same flock is common in April and May.

Only the American White Pelican breeds in South Dakota. The state hosts a small but consistent breeding population, particularly on islands and peninsulas in larger lakes where colonies establish away from disturbance. The 440 confirmed sighting records indicate a well-established breeding and migratory population. Nesting occurs in spring and early summer, with pelicans departing after July as the breeding season concludes. Brown Pelicans do not breed anywhere in the interior United States and have never been documented nesting in South Dakota.

American White Pelicans are among the largest waterbirds in North America. Adults reach 50 to 70 inches in length from bill to tail, with a wingspan of 8.5 to 9.5 feet. The wingspan makes them longer in flight than Bald Eagles, though less muscular. Weight ranges from 7 to 15 pounds, with males larger than females. The massive bill alone stretches 10 to 15 inches and can hold up to 3 gallons of water. This combination of size and wingspan makes American White Pelicans visible at great distances across open water, often appearing almost impossibly large when seen up close.

The throat pouch is a defining feature unique to all pelicans. In American Whites, the pouch hangs beneath the lower jaw and is typically pale yellow or whitish, though breeding males develop a vibrant orange-yellow pouch. The pouch is not a storage organ for fish; instead, pelicans use it as a net, swinging it beneath the water to trap fish. The pouch can hold enormous quantities of water and prey, and you can often see the outline of the full pouch when a bird surfaces from feeding. Brown Pelicans also have a pouch, but it is brown and less prominent than the American White's dramatic throat sac, making pouch color another useful field mark when comparing the two species.

American White Pelicans feed by dabbing or dipping their bills in the water from the surface, often working cooperatively in groups. They may circle in a flock to herd fish into shallow areas, then dip repeatedly to scoop prey. This method is energetically efficient for birds adapted to inland lakes. Brown Pelicans, by contrast, are specialized plunge-divers: they spot fish from the air, fold their wings, and dive steeply into the water from heights of 20 to 60 feet. The plunge-diving strategy reflects their adaptation to ocean and coastal waters. In South Dakota, if you watch American Whites from shore, you will see them calmly dabbing at the water surface rather than the dramatic diving display of their coastal cousins.

American White Pelicans in South Dakota are migratory, not permanent residents. The overwhelming majority arrive in spring, remain through early summer for breeding, and depart by late fall. The monthly observation data shows a distinct migration pattern: high numbers in April, May, and June; moderate numbers in July and August; and sharp declines from September onward. By winter, only 1 to 2 sightings occur monthly, and some months have no records at all. This pattern reflects the birds' dependence on ice-free water for feeding. Pelicans winter in warmer regions from the southern United States to Central America, making their spring return to South Dakota predictable and concentrated.

Pelicans are unmistakable once you recognize their signature features: the massive bill, the large throat pouch, the hunched posture, and the stocky neck. Unlike herons and egrets, which have thin necks and pointed bills, pelicans have thick necks and an enormous, flat bill with a hinge at the tip. Unlike cormorants, which are dark and sleek, American White Pelicans are brilliantly white with black wings. Unlike geese and swans, pelicans have a different silhouette in flight, with their long wings held more rigidly and a distinctive crooked neck posture. On the water, a pelican's size, pale body, and bill shape make identification certain even from a distance.

No, pelicans are not year-round residents in South Dakota. They are seasonal visitors concentrated in spring and early summer. While a few individuals occasionally linger into fall or even early winter during unusual weather, the vast majority depart by late August or September. Only 1 to 5 sightings occur in each of the fall and winter months, compared to over 100 in April and May. If you want to see pelicans reliably in South Dakota, plan visits between April and June when migration and breeding bring peak numbers to the state's lakes and reservoirs.