Black-necked Stilt

About

The Black-necked Stilt is a striking, long-legged wading bird known for its contrasting black and white plumage and exceptionally long, slender pink legs. It is a common inhabitant of shallow wetlands across much of the Americas.

Size & lifespan

Length

35-40 cm (13.8-15.7 in)

Wingspan

67-83 cm (26.4-32.7 in)

Weight

136-205 g (4.8-7.2 oz)

Lifespan

Up to 10 years in the wild

Diet

Carnivore (primarily aquatic invertebrates and small fish)

Physical characteristics

Plumage

Adults have a stark black back, wings, and hindneck, contrasting sharply with a pure white underparts, forehead, and a spot above the eye. A black cap extends from the bill to the nape. Females typically have a browner wash on the back and wings, especially during breeding season, compared to the glossy black of males.

Beak shape

Long, very thin, needle-like, and straight black bill.

Eye color

Dark brown with a small white spot above the eye.

Leg color

Extremely long, slender, bright pink to reddish-pink legs.

Distinguishing features

Unmistakable combination of extremely long pink legs, slender black bill, and sharp black-and-white plumage. The black extends down the back of the neck.

Juvenile appearance

Juveniles resemble adult females but have a duller, browner back and wings with buffy feather edgings, giving a somewhat scaled appearance. The black cap is often mottled with white, and the legs are a duller pink.

Seasonal changes

Plumage is generally consistent year-round, with only subtle differences between breeding and non-breeding adults, mainly in the intensity of the black/brown coloration on the back of females.

Sexual dimorphism

Males typically have a more glossy, solid black back and wings, while females often show a brownish-black or sooty-brown wash on the back and wings, particularly noticeable during the breeding season. The black cap on females may also be less extensive or slightly duller.

How to identify

1. 1

   Overall Shape and Size

   Look for a medium-sized, slender shorebird with disproportionately long, thin legs and a very thin, straight bill.

2. 2

   Plumage Pattern

   Observe the stark contrast: glossy black on the back, wings, and hindneck, with pure white underparts and forehead. Note the black cap extending from the bill over the crown and down the back of the neck.

3. 3

   Leg Color

   The bright pink to reddish-pink legs are a highly distinctive and immediate identification feature.

4. 4

   Bill Shape

   The long, needle-thin, straight black bill is characteristic.

5. 5

   Vocalization

   Listen for the sharp, repeated 'kip-kip-kip' or 'kek-kek-kek' calls, especially when the bird is agitated or in flight.

6. 6

   Behavior

   Watch for its characteristic wading and probing foraging style in shallow water, often sweeping its bill side-to-side.

Habitat & range

Biomes

Wetlands, marshes, shallow lakes, ponds, estuaries, salt ponds, flooded fields, sewage ponds, and coastal lagoons.

Geographic range

Widespread across the Americas. Breeding range extends from the western and southern United States, through Mexico and Central America, to northern South America, and parts of the Caribbean. Non-breeding range extends further south into South America.

Elevation range

Primarily found in lowlands, from sea level up to approximately 2,000 meters (6,500 feet), though less common at higher elevations.

Preferred environments

Shallow, open water with muddy or sandy substrates, often with sparse emergent vegetation. They favor areas where they can easily wade and forage.

Behavior

Activity time

Diurnal, actively foraging during daylight hours.

Feeding habits

Forages by wading in shallow water, often sweeping its bill side-to-side or probing the mud for aquatic insects (beetles, flies, dragonflies), crustaceans, small fish, tadpoles, and occasionally seeds. They use their long legs to wade in deeper water than many other shorebirds.

Social behavior

Highly social, especially during the breeding season, forming loose colonies. Outside of breeding, they often gather in flocks, sometimes numbering in the hundreds or thousands, particularly during migration and in wintering grounds.

Flight pattern

Flight is strong and direct, with rapid wingbeats. Their long legs trail conspicuously behind the body, extending well beyond the tail. They often fly with their neck extended.

Migration pattern

Northern populations are migratory, moving south for the winter. Southern populations are largely resident. Migrants travel along coasts and inland waterways, often in large flocks.

Territoriality

During the breeding season, pairs defend a small territory around their nest site, often aggressively chasing away intruders, including other stilts and larger birds.

Breeding & reproduction

Breeding season

Varies geographically, typically from April to August in North America, and year-round in tropical regions, often coinciding with periods of abundant water and food.

Nesting habits

Nests are typically shallow scrapes on the ground, often lined with pebbles, shell fragments, or bits of vegetation. Nests are usually located on small islands, hummocks, or dikes in shallow water, or on bare ground near water. They often nest in loose colonies.

Clutch size

Usually 3-5 eggs, most commonly 4.

Egg description

Typically 3-5 eggs, olive to buffy-brown, heavily spotted and blotched with dark brown or black, providing excellent camouflage.

Incubation period

22-26 days, incubated by both parents.

Fledging period

Chicks are precocial, leaving the nest within hours of hatching. They can feed themselves but are guarded by parents for about 28-32 days until they can fly.

Parental care

Both parents share incubation duties and care for the young. They are highly protective of their chicks, often performing distraction displays (e.g., 'broken-wing' display) to lure predators away from the nest or young.

Where to find

Field tips

1. Scan Shallow Water. Focus your binoculars on the shallowest parts of wetlands, where they wade and forage. Their long legs allow them to access slightly deeper water than many other shorebirds.
2. Listen for Calls. Their distinctive 'kip-kip-kip' call is often heard before the bird is seen, especially if they are disturbed.
3. Look for Movement. Their constant probing and sweeping motions while foraging make them relatively easy to spot against the water or mud.
4. Check Colonies. During breeding season, look for loose nesting colonies on small islands or dikes within wetlands.
5. Observe Flight. When flying, their long pink legs trailing behind are a key identification feature.

Similar species

Quick facts

Leg Length:

Longest legs relative to body size of any bird in North America (excluding flamingos).

Foraging Style:

Wades and probes, often sweeping its bill side-to-side.

Sociality:

Highly social, often found in flocks and nesting colonies.

Parental Defense:

Known for aggressive nest defense and distraction displays.

Taxonomic Status:

Often considered a subspecies of the Common Stilt (Himantopus himantopus) by some authorities, but increasingly recognized as a distinct species (Himantopus mexicanus).

Fun facts

• The Black-necked Stilt's legs are so long that when it flies, they extend far beyond its tail, making it look like it's dragging something behind it.
• Despite their delicate appearance, Black-necked Stilts are fierce defenders of their nests and young, often mobbing much larger predators.
• They can sometimes be seen foraging in very deep water, swimming briefly if necessary to reach food, though they primarily wade.
• Their scientific name 'Himantopus' comes from Greek words meaning 'strap-foot' or 'thong-foot', referring to their long, slender legs.

Scientific classification

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Charadriiformes

Family

Recurvirostridae

Genus

Himantopus

Species

Himantopus mexicanus

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