The Long-tailed Cormorant, also known as the Reed Cormorant, is a striking waterbird found across sub-Saharan Africa and Madagascar. Known scientifically as Phalacrocorax africanus, this medium-sized cormorant is a familiar sight along freshwater wetlands, rivers, and calm coastal waters. Its sleek black plumage, distinctive long tail, and characteristic face patches make it relatively easy to identify in the wild. Adapted for an aquatic lifestyle, the Long-tailed Cormorant is an expert diver and fisher, feeding on a variety of fish species. Despite being common and widespread, understanding its ecology and behavior offers fascinating insights into the diversity of African waterbirds.
Scientific Classification
The Long-tailed Cormorant belongs to the family Phalacrocoracidae, which includes all cormorants and shags. Its scientific name is Phalacrocorax africanus. This species was first described by the German naturalist Johann Friedrich Gmelin in 1789. The genus Phalacrocorax encompasses several species of cormorants distributed worldwide, typically characterized by their diving ability and fish-based diets.
Within the genus, the Long-tailed Cormorant shares close evolutionary relationships with other African and Eurasian cormorants, such as the Great Cormorant (Phalacrocorax carbo) and the Cape Cormorant (Phalacrocorax capensis). It is sometimes placed in the genus Microcarbo by some taxonomists due to its relatively small size, though the prevailing consensus retains it in Phalacrocorax.
There are several recognized subspecies of the Long-tailed Cormorant, with minor variations in plumage and size across its extensive range. These subspecies reflect adaptations to local environments, but all share the defining characteristics of the species such as the long tail and colorful facial skin during the breeding season.
Geographic Range & Distribution
The Long-tailed Cormorant is native to a broad swath of Africa south of the Sahara Desert, extending into Madagascar and some surrounding islands. Its distribution includes countries from Senegal and Mauritania in West Africa eastward through Sudan and Ethiopia to Kenya and Tanzania in East Africa, and southward through Zambia, Zimbabwe, Botswana, South Africa, and Mozambique. It is one of the most widespread cormorants on the African continent.
This species inhabits a variety of freshwater and coastal environments. It is commonly found around lakes, rivers, swamps, dams, and estuaries. Although it prefers inland waters, it can also be seen along quiet coastal shores and mangroves. The Long-tailed Cormorant is largely resident throughout its range but may undertake local seasonal movements in response to changing water levels or food availability, especially during the dry season when wetlands shrink.
In Madagascar, it occupies similar habitats, favoring freshwater lakes and rivers. The bird’s adaptability to diverse aquatic environments and tolerance of human-altered landscapes contribute to its widespread presence and apparent population stability.
Physical Description
The Long-tailed Cormorant is a small to medium-sized cormorant, measuring approximately 50 to 55 centimeters in length, with a wingspan of around 85 centimeters. It typically weighs between 500 and 900 grams, making it lighter than some of the larger cormorant species found elsewhere.
Its plumage is predominantly glossy black with a subtle greenish sheen, particularly prominent during the breeding season. The wing coverts show a distinctive silvery or grayish coloration, adding to its elegant appearance. One of the most notable features of this species is its long, graduated tail, which is proportionally longer than in most other cormorants, hence the common name.
The bird’s head is relatively small with a short crest of feathers that may be more pronounced during breeding. Its face is marked by bare skin patches that vary in color from yellow to red, depending on the season and the individual. The bill is stout and hooked at the tip, typically pale yellow with a darker culmen. The eyes are greenish, providing a striking contrast to the dark feathers.
Sexes are similar in appearance, making males and females difficult to distinguish in the field. Juvenile birds and non-breeding adults tend to have browner plumage with a white belly and less glossy feathers. In some southern populations, the crest may be retained throughout the year, while in others it appears only during the breeding season.
Behavior & Diet
The Long-tailed Cormorant is a highly skilled diver and swimmer, spending much of its time in or near water. It feeds primarily on fish, employing a hunting technique that involves diving underwater and chasing prey with agile, webbed feet propelling it forward. Its diet is diverse, including small to medium-sized freshwater and estuarine fish species such as tilapia, catfish, and various cichlids. Occasionally, it may also consume aquatic insects, crustaceans, and amphibians, especially when fish are scarce.
Typically, the Long-tailed Cormorant hunts in shallow waters, often less than 5 meters deep, but it can dive to depths exceeding 10 meters when necessary. After catching fish, it frequently surfaces to bring the prey to the shore or a favored perch before swallowing it whole. This behavior allows the bird to rest briefly and scan for further feeding opportunities.
Outside of feeding, the Long-tailed Cormorant is often seen perched on rocks, logs, or branches near water, spreading its wings wide to dry its feathers. Unlike many waterbirds, cormorants lack the dense, waterproof plumage typical of ducks, so they must air-dry to maintain optimal buoyancy and flight capability. This wing-spreading posture is a classic and iconic image among cormorant species.
The species is generally social, frequently forming loose flocks when feeding or roosting. However, it may also be observed singly or in pairs, particularly during the breeding season. Its vocalizations are relatively quiet compared to some other cormorants but include low croaks and grunts used in social interactions. According to Cornell Lab of Ornithology, this species is well documented.
Breeding & Reproduction
The Long-tailed Cormorant breeds primarily during the wet season, when aquatic food resources are abundant. It nests in colonies, though sometimes solitary nests are found, often close to other waterbirds. Nesting sites are usually located in trees, shrubs, or reed beds near freshwater bodies, but ground nests on islands or rocky shores also occur. According to RSPB, this species is well documented.
The nest is a platform constructed of twigs, reeds, and other plant material, lined with softer vegetation. Both males and females participate in building the nest and incubating the eggs. The typical clutch consists of two to four pale blue-green eggs, which are incubated for about 25 to 30 days.
After hatching, the chicks are altricial, meaning they hatch naked and helpless, requiring extensive parental care. Both parents feed the young by regurgitating partially digested fish. The chicks grow rapidly and fledge approximately 50 to 60 days after hatching, though they often remain near the nest site for some time afterward, gradually learning to fish independently.
Successful breeding depends heavily on water availability and food abundance. In years of drought or habitat disturbance, breeding success may decline, but the species’ widespread distribution and adaptability help maintain stable populations overall.
Conservation Status
The Long-tailed Cormorant is currently listed as Least Concern on the International Union for Conservation of Nature (IUCN) Red List. This status reflects its extensive range, large population size, and apparent stability. There are no major widespread threats causing significant declines at present.
However, localized threats do exist and can impact specific populations. These include habitat degradation due to wetland drainage, pollution, and human disturbance at breeding colonies. Overfishing in some areas can reduce prey availability, potentially affecting feeding success. Additionally, conflicts with fisheries sometimes lead to persecution, as cormorants are mistakenly blamed for declining fish stocks.
Conservation efforts focus on protecting wetland habitats and maintaining healthy freshwater ecosystems. Since the Long-tailed Cormorant is sensitive to water quality and availability, preserving natural wetlands benefits not only this species but also many other aquatic plants and animals.
Interesting Facts
The Long-tailed Cormorant’s long tail is not just a visual feature but plays an important role in its swimming and diving agility. The tail feathers help steer underwater, allowing precise control when chasing fish. This adaptation is especially useful in the dense vegetation of reed beds and shallow waters where the bird often hunts.
Unlike many water birds, cormorants have relatively less waterproof feathers. This trait allows them to dive more efficiently by reducing buoyancy, but it means they must spend considerable time drying their plumage with wings outstretched after fishing. This behavior is often seen in the early morning or late afternoon.
Long-tailed Cormorants have a unique facial display during the breeding season, with brightly colored skin patches that intensify in color to attract mates. These patches can range from yellow to orange-red and serve as visual signals of health and reproductive readiness.
Birdwatchers and wildlife photographers prize the Long-tailed Cormorant for its elegant form and dynamic fishing behavior. Its presence is often an indicator of healthy aquatic ecosystems, making it an important species for ecological monitoring in African wetlands and waterways.
In some cultures, cormorants have been used traditionally in fishing, trained to catch fish in close collaboration with humans, though this practice is more common with other species such as the Great Cormorant in Asia.
Conclusion
The Long-tailed Cormorant is a remarkable and adaptable bird that plays an important role in Africa’s aquatic ecosystems. Its widespread distribution, elegant appearance, and expert fishing skills make it a fascinating subject for nature enthusiasts, birdwatchers, and photographers alike. While currently secure in its conservation status, ongoing efforts to protect wetland habitats remain crucial to ensuring that future generations can continue to enjoy the presence of this sleek black diver along Africa’s rivers and lakes. Understanding the natural history and behavior of the Long-tailed Cormorant enriches our appreciation of wetland biodiversity and highlights the intricate connections within freshwater environments.
