25 Water Birds in Connecticut (ID Guide)

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Scientific Name: Pelecanus occidentalis

Length: 3 ft 3 in to 5 ft 0 in

Wingspan: 6 ft 8 in to 7 ft 6 in

Weight: 4.4 to 11.0 lb

The Brown Pelican is a large water bird famous for its distinct body shape and dramatic feeding habits. Known for their habit of diving headfirst into the water to catch fish, they are a staple along the coasts of the southern United States.

Appearance: Brown Pelicans are easily identifiable due to their long, curved necks, stout bodies, and large bills with a stretchy pouch. As their name suggests, they have brown and gray body feathers, with a paler head and neck that can become yellowish in breeding season.

Diet: Their diet mainly consists of fish, which they catch by making spectacular plunging dives from the air, scooping up the fish in their expandable bill pouches. They then drain the water from their pouches before swallowing their catch.

Reproduction: Brown Pelicans nest in colonies on islands, laying 2 to 3 eggs in nests made from sticks and vegetation. Both parents share incubation and feeding duties. After hatching, the chicks remain in the nest for around 12 weeks before they are ready to leave.

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Scientific Name: Nyctanassa violacea

Length: 1 ft 10 in – 2 ft 4 in

Wingspan:

Weight: 1.43–1.87 lb

The Yellow-crowned Night Heron is a medium-sized heron commonly found in wetlands and coastal habitats across the southeastern United States.

Appearance: Yellow-crowned Night Herons have a sturdy body with a comparatively short neck and legs. Their distinctive feature is their namesake yellow crown, which contrasts sharply with their gray body and back. They have red eyes and a heavy, dark bill. During the breeding season, they develop long, wispy plumes on their head, giving them a stylish appearance.

Diet: Yellow-crowned Night Herons are known for their preference for crustaceans, especially crabs and crayfish. They hunt mostly at night, stalking their prey in shallow water, often remaining still for long periods before striking quickly with their bill.

Reproduction: Yellow-crowned Night Herons nest in small colonies, typically in trees or shrubs near water. The female lays 3 to 5 pale blue-green eggs which are incubated by both parents for about 25 days. After hatching, the chicks are cared for by both parents and fledge in about 30-40 days. They often return to the same nesting sites year after year.

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Scientific Name: Botaurus lentiginosus

Length: 23–33 in

Wingspan: 36–45 in

Weight: 0.816–2.363 lb

The American Bittern is a wading bird, often seen in North American wetlands, known for its exceptional camouflage and unique booming call.

Appearance: American Bitterns are medium-sized birds, with a stocky body, a thick neck, and relatively long legs. Their plumage is brown and heavily streaked with a variety of shades, making it an excellent camouflage against marshy vegetation. Their eyes are yellow, and they have a pointed yellow bill.

Diet: These secretive birds are carnivorous, feeding mostly on fish, but also on insects, amphibians, and small mammals. They hunt by standing still and waiting for prey to come within striking distance, then rapidly lunging forward with their long necks to seize the prey.

Reproduction: American Bitterns nest in dense wetland vegetation, often quite close to the water. The female lays a clutch of 2 to 7 eggs, and she is solely responsible for incubation and caring for the young.

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Scientific Name: Ixobrychus exilis

Length: 11 to 14 in

Wingspan: 16 to 18 in

Weight: 1.8 to 3.6 oz

The Least Bittern is a small and secretive water bird species that often goes unnoticed in its marshy habitat due to its cryptic behaviors and coloring.

Appearance: The Least Bittern is a compact bird with a hunched posture and short neck. It features a mix of buffy and brown coloration on its upper parts, while its chest and neck are more of a pale, buffy color. The males have darker backs and caps than the females. A distinctive feature of this bird is its yellow eyes.

Diet: The Least Bittern’s diet consists mainly of small fish and invertebrates. They forage by stalking slowly through their marshy habitat and striking out with a swift jab of their bill to snatch their prey.

Reproduction: Least Bitterns are solitary nesters, often hiding their nests in dense wetland vegetation. The female lays between 4 to 7 eggs and both parents participate in incubation and feeding.

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Scientific Name: Plegadis falcinellus

Length: 19–26 in

Wingspan: 31–41 in

Weight: 1.069 to 2.138 lb

The Glossy Ibis is a wading bird that has an extensive global range, including parts of the United States, and is the most widespread of all ibis species.

Appearance: The Glossy Ibis is characterized by its slender, curved bill and dark, iridescent body. Its feathers are a rich chestnut and dark green, which appear metallic and shiny, thus giving it the name ‘Glossy’. In breeding season, the area around the bird’s eyes becomes a bright, striking blue.

Diet: Glossy Ibises feed primarily on invertebrates such as insects, worms, and small crustaceans. They use their long, curved bills to probe for food in soft mud, often following the tide in coastal marshes, but also in shallow freshwater wetlands.

Reproduction: Glossy Ibises typically nest in colonies, often with other wading birds. The nests are made from twigs and reeds and are usually placed in trees, shrubs, or reed beds over water. The female lays 3 to 4 blue-green eggs, which are incubated by both parents for about 21 days. Once hatched, the chicks are cared for by both parents and fledge at about 6 weeks.

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Scientific Name: Fulica americana

Length: 13–17 in

Wingspan: 23 to 28 in

Weight: 1.270 to 1.870 lb

The American Coot is a ubiquitous water bird commonly seen in the wetlands, lakes, and ponds of North America, recognized for its adaptability and striking features.

Appearance: American Coots are easily identifiable by their slate-gray bodies, offset by a white, chicken-like bill and a red eye. Their legs are also distinctive, equipped with lobed toes, as opposed to the webbed feet seen in ducks, which assist them in navigating both land and water adeptly.

Diet: While aquatic plants form the bulk of an American Coot’s diet, they aren’t strictly herbivores. These versatile birds also consume small invertebrates and fish, demonstrating their ability to adapt and survive in a variety of habitats.

Reproduction: Nesting for the American Coot usually happens in shallow water bodies, where they construct a floating nest hidden among the vegetation. A clutch can contain between 8 to 12 eggs, all of which are incubated by both parents.

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Scientific Name: Aix sponsa

Length: 19 to 21 in

Wingspan: 26 to 29 in

Weight: 16.0-30.4 oz

The Wood Duck is an exquisitely colorful waterfowl known for its unique nesting habits and is commonly seen in wooded swamps, marshes, and streams across North America.

Appearance: With their dazzling plumage, Wood Ducks are among the most stunning birds. Males display a multitude of colors, including a green and purple crested head, red eyes, and a white-striped chest, all contrasted with a bronze-colored body. Females, though more subdued with a gray-brown body and white eye-ring, also possess their own charm.

Diet: Wood Ducks have a diverse diet that includes seeds, fruits, and insects, as well as other invertebrates. Their broad diet helps them to adapt to a variety of habitats, whether in the wild or in urban areas with suitable nesting sites.

Reproduction: Unlike most other ducks, Wood Ducks prefer to nest in tree cavities near water, leading to their common name. They will also readily use nest boxes if they’re available. A typical clutch consists of 9 to 14 eggs, which the female incubates alone.

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Scientific Name: Mergus merganser

Length: 23–28 in

Wingspan: 30 – 38 in

Weight: 2 lb 0 oz – 4 lb 10 oz

The Common Merganser is a large and elegant diving duck, famous for its unique fishing abilities and seen often in the lakes, rivers, and coastal areas across North America.

Appearance: The male Common Merganser is quite striking with its dark green, almost black, crested head, bright red bill, and white body tinged with salmon-pink. The females have a reddish-brown crested head, a white neck, and a grayish body, but share the same red bill as the males.

Diet: True to their diving duck status, Common Mergansers are exceptional hunters, primarily feeding on fish. They’re also known to consume aquatic invertebrates and, on occasion, small mammals and birds. Their serrated bills are specialized to hold slippery fish tightly.

Reproduction: Like the Wood Duck, Common Mergansers also nest in tree cavities or nest boxes close to water bodies, but can also use rock crevices or holes in the ground. A clutch usually contains 9 to 12 eggs, incubated solely by the female.

Listen to Hooded Merganser

Scientific Name: Lophodytes cucullatus

Length: 15.8-19.3 in

Wingspan: 23.6-26.0 in

Weight: 16.0-31.0 oz

The Hooded Merganser is a distinctive species of diving duck known for its showy crest and its excellent diving skills.

Appearance: Male Hooded Mergansers are especially striking with a large, fan-shaped, black and white crest, which can be expanded or contracted. They have bright yellow eyes, a dark back, and a white chest. The females have a more understated appearance with a brownish body, a smaller, reddish-brown crest, and dark eyes.

Diet: Consists of small fish, aquatic insects, and crustaceans. Their eyes are specially adapted for underwater vision, allowing them to spot and catch prey while diving.

Reproduction: Similar to Buffleheads, Hooded Mergansers often nest in tree cavities near water bodies. The female lays a clutch of about 10 to 12 eggs and incubates them alone for about a month.

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Scientific Name: Mergus serrator

Length: 20–24 in

Wingspan: 28–34 in

Weight: 28.2 to 47.6 oz

The Red-breasted Merganser is a fascinating diving duck species, recognized for its swift flight and exceptional diving capabilities. They inhabit freshwater and saltwater environments and are quite common in North America and Eurasia.

Appearance: The Red-breasted Merganser boasts an interesting appearance. Males display a dark green head, bright red eyes, and a distinctive, long reddish-brown breast. Their bodies are mainly grey, and they also have a white collar and a thin, serrated bill. Females are more subdued, featuring a rusty cinnamon head with a shaggy crest and grey body.

Diet: Predominantly includes small fish, which they catch by diving underwater. They can also feed on aquatic insects, crustaceans, and occasionally amphibians. Their serrated bill helps them grip slippery prey effectively.

Reproduction: The breeding ground for Red-breasted Mergansers is typically near freshwater lakes or rivers. Females build nests in tree cavities, on the ground hidden in vegetation, or use abandoned nests of other birds. The female lays a clutch of 6 to 12 eggs.

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Scientific Name: Anas rubripes

Length: 21–23 in

Wingspan: 35–37 in

Weight: 1.59–3.62 lb

The Black Duck is a relatively large species of waterfowl known for its dark plumage and distinctive, richly flavored meat.

Appearance: Both male and female Black Ducks sport a similar look. They are predominantly dark brown in color with a lighter, beige-colored underbelly. They feature a yellowish-green bill, and their wings, when spread, reveal a purple-blue speculum bordered by two black bands.

Diet: Black Ducks primarily subsist on plant matter. They feed on seeds, leaves, and roots of aquatic plants, as well as grasses and crops. In addition, they sometimes eat small fish, insects, and aquatic invertebrates. These ducks can often be spotted foraging in shallow water bodies and marshlands.

Reproduction: Black Ducks typically create their nests on the ground, preferably in secluded, well-hidden spots near water bodies. The female usually lays a clutch of about 6 to 12 eggs, which she incubates for about four weeks.

Listen to Blue-winged Teal

Scientific Name: Spatula discors

Length: 16 in

Wingspan: 23 in

Weight: 13 oz

The Blue-winged Teal is a small species of dabbling duck known for its striking plumage and its extensive migratory habits.

Appearance: Male Blue-winged Teals are quite colorful, with a slate gray head and neck, a white crescent in front of the eyes, and a predominantly brown body with specks of black. The name “Blue-winged” comes from the patch of blue feathers visible on their wings during flight. Females, in contrast, are primarily brown and subtly mottled to provide camouflage.

Diet: The Blue-winged Teal feeds mainly on plant matter, such as seeds and aquatic vegetation. However, they also supplement their diet with small invertebrates, especially during the breeding season. They are known for their “dabbling” behavior, where they feed at the surface of the water rather than diving.

Reproduction: Blue-winged Teals prefer to nest on the ground in grassy areas near water. The female typically lays a clutch of 9 to 13 eggs, which she incubates alone for about three weeks. After hatching, the ducklings can feed themselves but remain under the mother’s protection until they are capable of flying.

Listen to Northern Pintail

Scientific Name: Anas acuta

Length: 23–30 in

Wingspan: 31–37 in

Weight: 1 –3 lb

The Northern Pintail is a graceful species of duck recognized for their elegance in flight and their sleek bodies and long tails which is pin-shaped.

Male Northern Pintails are celebrated for their distinctive appearance, featuring a chocolate brown head, a white neck, and a grayish body. The most notable characteristic is the long, pointed tail feathers, which give this species its name. Females are more understated in color, sporting a mottled brown plumage.

Diet: Consists primarily of plant matter, including seeds and aquatic vegetation. They are also known to eat insects, especially during the breeding season. The Northern Pintail is often seen dabbling and upending in water bodies to forage for food.

Reproduction: Northern Pintails usually nest on the ground, near water bodies. The female lays a clutch of 7 to 9 eggs and is solely responsible for their incubation, which lasts for about three weeks.

Listen to Green-winged Teal

Scientific Name: Anas crecca

Length: 12.2-15.3 in

Wingspan: 20.5-23.2 in

Weight: 14.9-17.6 oz

The Green-winged Teal is a small species of dabbling duck known for its vibrant coloration and quick, agile flight.

Appearance: Male Green-winged Teals are particularly striking with a chestnut head, a broad green streak running from the eye down the neck, and a speckled chest. The name “Green-winged” originates from the patch of iridescent green feathers visible on their wings. Females are more subtly colored, primarily in mottled brown tones that provide excellent camouflage.

Diet: The Green-winged Teal’s diet consists largely of plant matter such as seeds and aquatic vegetation. They also eat small invertebrates, particularly during the breeding season. These birds are ‘dabblers.’

Reproduction: Green-winged Teals typically nest on the ground, often concealed in dense vegetation near water bodies. The female lays a clutch of about 6 to 9 eggs, which she incubates alone for roughly three weeks.

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Scientific Name: Aythya collaris

Length: 15.3-18.1 in

Wingspan: 24.4-24.8 in

Weight: 17.3-32.1 oz

The Ring-Necked Duck is a small to medium-sized diving duck known for its distinctive markings and agile diving abilities.

Appearance: Male Ring-Necked Ducks are characterized by their bold black-and-white coloration, with a glossy black back, a striking white ring around the base of the bill, and two white “rings” on their flanks. Despite their name, the chestnut-colored ring around their neck is often hard to see. Females are more subtly colored with a gray-brown body and a white eye-ring.

Diet: These ducks have a varied diet that includes aquatic plants, seeds, and invertebrates, which they obtain by diving underwater in both shallow and deep water bodies.

Reproduction: The Ring-Necked Duck nests near water, often in densely vegetated areas. The female typically lays between 8 to 10 eggs, which she incubates alone, but both parents will care for the ducklings once they hatch.