2 Types of Pelicans in Arizona

The American White Pelican is one of Arizona's largest water birds, with a total length of around four and a half feet and a wingspan that can exceed nine feet. Adults are predominantly white with black flight feathers visible when the wings are spread, which creates a striking contrast. The bill is extraordinarily long and flattened, measuring up to fifteen inches, with a large throat pouch underneath used for scooping fish. The bill and pouch are orange to pale yellow. The head is also white with a yellowish-orange wash on the crown and upper neck during breeding season, though Arizona birds in winter show less color. Eyes are pale and ringed with bare yellowish skin. Legs are short and typically orange or pale yellow. Young pelicans have white or off-white plumage with darker patches and duller bills and pouches, making them look less bold than adults but still recognizable by the massive size and distinctive bill shape.

Brown Pelicans are notably smaller than American White Pelicans, measuring around three and a half feet long with a wingspan of six to seven feet. The plumage is mostly dark brown and gray, not white. The head is white and chestnut, with a white neck contrasting sharply with a darker body. The bill is long and pointed, less flattened than the American White Pelican's bill, and yellow or grayish in color. Brown Pelicans are coastal birds primarily found along the Pacific Ocean and Gulf of Mexico. Their appearance in Arizona is extremely unusual and happens only when young birds disperse or during exceptional drought years when coastal food becomes scarce. If you spot what you think might be a Brown Pelican in Arizona, document it carefully and report the sighting to local birding networks, as it would be noteworthy.

American White Pelicans favor Arizona's larger lakes and reservoirs where fish are abundant and open water allows them to feed in their characteristic cooperative groups. Lake Havasu along the Colorado River is a premier pelican spot, attracting regular flocks during winter. Mohave Lake, also on the Colorado River, hosts pelicans throughout the season. Lake Mead near Boulder City and the Colorado River below major dams support pelicans, especially during migration. Smaller lakes like Saguaro Lake, Salt River, and even some large ponds can host pelicans, though numbers vary year to year based on water levels, fish populations, and weather patterns. Inland reservoirs such as Lake Pleasant and Horseshoe Lake occasionally support pelicans, but the warm-water lakes of western Arizona are most reliable. Look for them floating in loose flocks, often in the deeper sections away from boat traffic, or soaring on thermals high above the water.

American White Pelicans begin arriving in Arizona in October and November as they migrate south from their breeding grounds in the northern interior West, particularly around the Great Plains and interior lakes of Canada and the United States. Peak numbers occur from December through February, with peak sightings in January. Winter populations gradually thin in March and April as birds move onward to wintering grounds in Mexico and coastal regions, though some linger through early May. A small number of pelicans are present in Arizona year-round, primarily non-breeding birds or failed breeders, but reliable viewing requires visiting between November and April. Summer sightings from June to September are uncommon and usually involve a few wandering juveniles. The highest probability of a memorable encounter is December through February, when flocks are largest and most concentrated on the state's major lakes.

American White Pelicans are specialized fish eaters that use cooperative feeding strategies. A group of pelicans will swim together in a line or semicircle, driving schools of fish toward shallow water where they can scoop them up easily using their large throat pouches. The bill acts as a scoop, not a spear. Pelicans gulp the fish whole and store them briefly in the pouch before tilting their heads back to allow the fish to slide down the throat. In Arizona, they feed on common freshwater fish species including carp, mullet, silversides, and other schooling fish available in lakes and reservoirs. Pelicans can consume up to several pounds of fish per day. They dive occasionally from the surface but do not plunge-dive like Brown Pelicans do. Pelicans often rest between feeding bouts, and in Arizona winter habitats, they take advantage of warm water and the absence of predators to conserve energy and wait for spring migration northward.

American White Pelicans breed in the northern interior West, primarily in the Great Plains, intermountain West, and Canada. Major breeding colonies are located on islands in lakes like Utah's Gunnison Island, Great Salt Lake, and similar remote sites far from Arizona. Pelicans migrate south each fall to escape freeze-up of freshwater lakes and to follow fish populations into warmer wintering grounds. Arizona's warm-water lakes, especially those fed by the Colorado River, provide perfect stopover and wintering habitat. The birds concentrate on these lakes from November through March because water remains unfrozen, fish remain accessible, and the climate requires less energy expenditure than colder northern lakes. Come spring, pelicans migrate north again to return to their breeding colonies. A small fraction of pelicans do not breed or failed at breeding that year, and these birds may linger in Arizona through summer, but the vast majority follow this predictable north-south migration pattern driven by breeding seasons and water conditions.

Young American White Pelicans have mostly white or off-white plumage similar to adults but often show brown or dusky patches on the wings, back, and sometimes the head. The bill and throat pouch are duller, typically a pale yellow, gray, or even whitish color rather than the bright orange or deep yellow of breeding adults. The coloring on the head is more muted, lacking the golden wash that older birds develop in breeding plumage. First-year pelicans are slightly smaller overall and may appear gangly or less coordinated. By their second or third year, pelicans develop richer plumage coloration and the characteristic bright bill and pouch colors. In Arizona's winter flocks, you will likely see a mix of adults in breeding or pre-breeding plumage showing more intense coloration and younger birds with softer, more subdued tones. Both groups are equally adapted to winter feeding in Arizona lakes and both participate in the cooperative fish drives that make pelican flocks so fascinating to watch.

In North America, only two pelican species exist: the American White Pelican and the Brown Pelican. No other pelican species naturally occurs in Arizona or the western interior. The other North American pelican, the Peruvian Pelican, is found only along the west coast of South America and has never been recorded in Arizona. However, extremely rare vagrants from coastal areas do occasionally wander far inland, and a handful of other pelican species exist globally but are restricted to Africa, Asia, and Australia. For practical purposes, if you see a pelican in Arizona, it is either an American White Pelican or, in the exceptional case of a Brown Pelican sighting, a very unusual dispersing individual from the California coast. No other species would realistically appear. Concentrate on learning the American White Pelican in detail, as you will encounter it with far greater regularity during winter months.