Dalmatian pelican

Original description In 1832, Carl Friedrich Bruch described the Dalmatian Pelican (Pelecanus crispus), naming it the "Curly-headed Pelican" (with crispus meaning "curly" in Latin) and referring to it in German as "Krausköpfiger Pelekan". Remarkably, this artwork was produced by Edward Lear, However, this view appeared in only a few publications and has not been widely accepted by the scientific community. Several lines of evidence support the recognition of P. crispus and P. philippensis as distinct species. First, their breeding ranges do not overlap: P. crispus is found across southeastern Europe and Central Asia, while P. philippensis is restricted to South and Southeast Asia. Furthermore, the two species exhibit differences in sexually selected traits: P. crispus develops a bright red gular pouch during the breeding season, whereas P. philippensis retains a pale pouch year-round and displays distinctive dark spots on the bill, which are absent in P. crispus and likely function in mate signalling. Finally, a 2013 molecular phylogenetic analysis based on mitochondrial and nuclear DNA confirmed that P. crispus and P. philippensis represent distinct evolutionary lineages. Nonetheless, the subspecies is not formally accepted by international taxonomic authorities. ==Description==

pelicans, highlighting its status as the largest pelican species. Median wingspans are based on field measurements and modern standard guides. The Dalmatian pelican is the largest of all pelican species Later sources, such as Seabirds: An Identification Guide (1983), Birds of Europe (2008) During the breeding season, this pouch becomes a vivid orange-red, contrasting with the more subdued yellow or grey tones observed during the rest of the year. The upper mandible remains greyish throughout, often with a slight orange tip. A distinguishing feature is the presence of a shaggy crest of curly feathers on the nape and back of the head, giving the bird a notably unkempt appearance compared to the smooth-headed great white pelican (Pelecanus onocrotalus). The legs are dark grey, another feature that helps separate it from related species with pinkish legs. While generally a quiet species, the Dalmatian pelican may produce deep, guttural grunts, hisses, or barking sounds during the breeding season. Juveniles are overall greyer and duller in appearance, with less distinctive crests and darker plumage, but gradually acquire the characteristic silvery-white plumage as they mature. ==Distribution and habitat==

Historically, the Dalmatian pelican was far more widespread across Europe than it is today. Subfossil remains dating back to the Holocene climatic optimum, approximately 7400 to 5000 years BP have been found as far north as Denmark. Additional remains dated to 1900–600 BP have been uncovered in central Europe, the Netherlands, and Great Britain. and the geographic position of the subfossil pelican records (blue).|leftCurrently, the Dalmatian pelican is widely distributed across southeastern Europe, Central Asia, and the Indian subcontinent, inhabiting large, open wetlands such as lakes, rivers, deltas, estuaries, and floodplains. Unlike the great white pelican, which remains mostly in lowlands, the Dalmatian pelican nests at various elevations and is more philopatric, typically returning to the same traditional breeding sites unless they become unsuitable due to disturbance or degradation. Although the species suffered dramatic declines during the 20th century, several strongholds remain. The largest known breeding colony is found at Small Prespa Lake, which is shared between Greece and Albania and supports around 1,600 pairs. Another significant population persists in the Danube Delta, with approximately 450 pairs recorded there. Other active breeding sites are scattered across southeastern Europe, including regions in Ukraine, North Macedonia, Romania, Bulgaria—particularly the Srebarna Nature Reserve—and Albania, where Karavasta Lagoon serves as a key nesting site. Although the species was considered extinct in Croatia since the 1950s, a lone Dalmatian pelican was observed there in 2011. ==Movements==

, Greece. The Dalmatian pelican is a partial migrant, and its movement patterns vary significantly across its range. In Europe, many populations are dispersive rather than fully migratory, with individuals often remaining near their breeding sites year-round or making only short-distance movements to the Mediterranean basin in winter. For example, in the Danube Delta, birds typically arrive in March and leave by the end of August, reflecting a predictable seasonal pattern aligned with breeding and food availability. By contrast, populations in Asia undertake more substantial migration. Pelicans breeding in southern Russia generally migrate to the central Middle East for the winter, with many wintering in wetlands across Iran and extending through the Indian subcontinent, reaching as far south as Sri Lanka and westward into Nepal and central India. Mongolian-breeding birds follow a different route, traveling to the east coast of China, including areas around Hong Kong, to spend the winter months. In flight, the Dalmatian pelican is striking: it soars with slow, powerful wingbeats, neck pulled back in a characteristic "S" shape similar to a heron. The wings are broad and pale greyish-white, with noticeable black tips on the primaries. This bird often flies in synchronized groups, gliding gracefully and silently above lakes and wetlands. Takeoff from water is particularly energetic. The pelican requires strong pushes with both feet and heavy flapping of its broad wings to become airborne, especially when carrying a full pouch of fish. == Feeding ecology ==

The Dalmatian pelican is a piscivorous, non-apex predator, functionally classified as an opportunistic secondary-to-tertiary consumer. It forages across freshwater, brackish, and coastal ecosystems, primarily during crepuscular hours, using shallow-water surface capture techniques. Its trophic role positions it as a top-level vertebrate consumer, but below strict apex predators due to its limited prey diversity and lack of intra-guild predation. Diet composition They predominantly consume fish from freshwater, brackish, and marine environments. Most of these are small to medium-sized fish; large enough to justify the effort of capture but small enough to be swallowed whole, as pelicans do not tear or chew their prey. Additionally, the species they prey on tend to form schools or shoals, are often benthic, and exhibit slow movements. These traits facilitate collective predation. Such preferences are typical of visual predators that forage in groups or in clear waters. Below are examples of prey species recorded in its diet: Total quantity analyses have indicated more typical daily consumption ranges of 1.2–1.5 kilograms. although more typically between 30 and 1,200 grams. When feeding on smaller fish, Dalmatian pelicans have been observed increasing their consumption rate to meet energetic needs. At Lake Mikri Prespa, regurgitates from adult pelicans feeding chicks contained an average of 384 g of fish, with up to 29 individual fish per sample. The size of these prey items ranged from 52 to 153 mm, although some regurgitates included individuals as small as 44 mm and weighing just 0.57 g. Spatial and temporal foraging patterns The diet of the Dalmatian Pelican is shaped by its foraging patterns, which are constrained by both the time of day when they fish and the proximity to their nesting sites. They typically forage in the early morning, at dawn, and during the late hours of the day, at dusk. When breeding, they rarely forage beyond 1 km from the nest—an interesting contrast to Great White Pelicans, which may travel tens of kilometres to find food. Their diet also shows marked seasonal variation. In early spring, they feed on fish that have died from hypoxia induced by ice cover. By late spring and early summer (May–June), their diet is dominated by adult fish. In mid-summer (July), they shift to juvenile fish. When chicks hatch, parents feed them a paste of semi-digested fish regurgitated directly into their bills. By late summer (August), fledglings begin catching appropriately sized fish themselves. For example, by around 1.5 months of age, they are already catching sticklebacks. In autumn, large congregations of Dalmatian Pelicans gather at sites such as the Terek Delta to exploit seasonal movements of freshwater fish fry. Remarkably, from November to April, their diet remains largely unknown, leaving a significant gap in our understanding of their feeding ecology for nearly half the year. Feeding range The Dalmatian Pelican is a generalist predator, but its diet varies with the prey available in each waterbody. It forages across diverse habitats and depths, from scavenging dead fish in drying wetlands to hunting live prey in waters up to 8 metres deep. Most of the fish it consumes inhabit shallow areas such as lake shores, estuaries, channels, and reservoirs. Foraging behaviour Dalmatian Pelicans generally forage alone, in pairs, or occasionally in trios, swimming upright and periodically plunging their heads to seize prey just beneath the surface. These imposing waterbirds cannot dive deep; instead, they depend on shallow waters, where fish linger near the surface and fishermen seldom intrude. When prey remains out of reach in deeper waters, pelicans may form loose cooperative groups, arranging themselves into semicircles that drive fish toward the shallows. Once in clear waters rich in submerged vegetation, pelicans may remain almost motionless, waiting for fish to venture within striking distance..During autumn, as water levels recede and wetlands dry, Dalmatian Pelicans turn to scavenging, feeding on fish weakened or killed by hypoxia and desiccation. This behaviour helps limit the spread of disease and restores a precarious balance to the ecosystem. In these shrinking landscapes, the pelican endures, plunging, preying, and holding disease at bay. == Trophic interactions ==

s (Phalacrocorax carbo) feed among Dalmatian pelicans, sometimes as competitors, == Breeding ==

Among a highly social family in general, the Dalmatian pelican may have the least social inclinations. This species naturally nests in relatively small groups compared to most other pelican species and sometimes may even nest alone. However, small colonies are usually formed, which regularly include upwards of 250 pairs (especially historically). Occasionally, Dalmatian pelicans may mix in with colonies of great white pelicans. Incubation, which is split between both parents, lasts for 30 to 34 days. The chicks are born naked but soon sprout white down feathers. Aggressive behaviour between siblings is very rare and generally non-fatal. When the young are 6 to 7 weeks of age, the pelicans frequently gather in "pods". The offspring fledge at around 85 days and become independent at 100 to 105 days old. Nesting success relies on local environmental conditions, with anywhere from 58% to 100% of hatchlings successfully surviving to adulthood. Sexual maturity is thought to be obtained at three or four years of age. ==Threats==

Throughout the 20th century, the Dalmatian pelican underwent a dramatic decline in numbers, becoming one of the most threatened pelican species. Habitat loss due to wetland drainage and land conversion is considered one of the primary drivers of this decline. This level of exploitation has reduced the Mongolian population to fewer than 130 individuals, making the species critically endangered in that region. Power line collisions Electrocution is a frequent cause of death in areas where power lines cross known flight paths. Efforts to reduce mortality from power lines have included marking dangerous lines with visual warnings and even dismantling some infrastructure near breeding colonies. Tourism Human disturbance at breeding sites has also been a major factor. Like all pelicans, Dalmatian pelicans are extremely sensitive to disturbance; if approached or startled, adults may temporarily abandon their nests, exposing eggs and chicks to predation or fatal exposure to the elements. In Greece, high levels of disturbance from recreational boating—particularly powerboats carrying tourists—have been linked to feeding disruptions, sometimes causing starvation and mortality in pelican populations. == Conservation ==

Water level management, habitat restoration, and public education programs have played vital roles in improving local conditions for breeding success. coordinated by Wetlands International. Today, the species is surveyed across five major population units: the Western and Eastern subpopulations of the Black Sea–Mediterranean flyway, the Fore-Caucasus and West Caspian populations, the Central and West Asia flyway populations, and the Mongolia–China population. Because Dalmatian pelicans rely on transboundary wetlands, such as Lake Prespa, effective census work demands cross-border coordination, even between states with political tensions. For example, although many birds nest in Greece, they frequently forage in North Macedonia. Yet, for years, the latter was not recognized as a "range state" in conservation terms, despite its ecological importance. ==Notes==