Black Skimmer

Identification

The black skimmer is the largest of the three skimmer species, measuring 40–50 cm long with a wingspan of 107–127 cm. Its most distinctive feature is its unusual bill: the basal half is red while the rest is mainly black, and the lower mandible is much-elongated—an adaptation for its unique feeding method. Adults in breeding plumage display a black crown, nape, and upper body contrasting sharply with white foreheads and underparts. The upper wings are black with white rear edges, while the tail and rump are dark grey with white edges. Non-breeding birds are paler and browner above with a white nape collar. One of the bird's most remarkable features is its eye: it has a dark brown iris and a catlike vertical pupil, unique among birds. The legs are bright red, and their distinctive call is a barking kak-kak-kak.

Range & Habitat

The black skimmer breeds throughout North and South America, inhabiting sandbars, sandy beaches, rivers, coasts, and lagoons. Northern populations are migratory, wintering in the warmer waters of the Caribbean and tropical and subtropical Pacific and Atlantic coasts. In contrast, South American populations are generally sedentary, making only shorter movements in response to annual floods that extend their feeding areas in river shallows. These birds are highly gregarious, spending considerable time loafing together on sandbars and other shallow-water habitats.

Behaviour & Diet

Black skimmers are renowned for their unique feeding behaviour. They fly with light, graceful movements and steady wing beats low over the water surface, using their elongated lower mandible to skim the water and catch prey by touch—both during the day but especially at night. They typically feed in large flocks and consume small fish (their primary prey), insects, crustaceans, and molluscs. During breeding season, the youngest chicks are fed as often as twelve times per day, with feeding frequency decreasing as chicks age. Parents primarily forage during low light levels at night, though they also forage during the day in preparation for nighttime feeding.

Best Time & Places to See It

Black skimmers are most active during dawn, dusk, and nighttime hours when their skimming behaviour is most pronounced. Look for them in loose breeding groups on sandbanks and sandy beaches throughout the Americas. Northern populations are most reliably found in winter months in Caribbean and tropical coastal waters. South American populations can be found year-round in their river and coastal habitats, with numbers varying according to seasonal flood patterns.

Photography Tips

Capture the black skimmer's distinctive feeding behaviour by photographing them in low-light conditions at dawn or dusk when they're actively skimming. Their gregarious nature means you'll often find multiple birds together, allowing for dynamic flock compositions. Focus on the unique elongated lower mandible and the striking colour contrast between the red bill base and black tip, as well as the red legs. The bird's graceful flight and low-water skimming technique offer excellent action photography opportunities, while their catlike eye provides striking detail shots.