Wood Duck vs Mallard - Birdbuddy WIKI

Wood Duck

Aix sponsa

Also known as: Carolina Duck

How to recognise a wood duck?

General appearance

Wood ducks are small to medium-sized perching ducks with a distinctive shape, featuring a boxy, crested head and a long tail. They exhibit broad, multicolored wings and a unique iridescence on their plumage. Wood ducks are most commonly found near wooded swamps, shallow lakes, and freshwater marshes.

Male vs female

Male wood ducks display a striking array of colors with iridescent greens, purples, and blues, a glossy green head, bright red eyes, and a distinctive white throat patch framed by black lines. Females, in contrast, have a more subdued appearance with grayish-brown plumage, a white eye-ring, and an overall mottled pattern. Both sexes have a unique, thin white bill with a dark tip.

Juvenile

Juvenile wood ducks resemble females with their duller coloration, though their plumage is generally even more muted. They lack the iridescent sheen of adult males and have less developed crests. As they mature, juveniles gradually develop characteristic markings and begin to show gender-specific coloration patterns as they reach adulthood.

Size

18.5 - 21.3 in/19.1 - 26.5 oz

Habitat

Primary habitat

The wood duck prefers shallow inland lakes, ponds, slow-moving rivers, and swamps, especially those surrounded by deciduous or mixed woodland with large trees overhanging the water, creating shade.

Additional range

The wood duck can also be found in open marshes within generally forested areas.

Range Map

What do wood ducks like to eat?

Natural diet

Wood ducks primarily consume seeds, with a significant portion of their diet comprising aquatic plant seeds and fallen seeds from trees and shrubs. Acorns are notably important in various areas. They also feed on insects and crustaceans, especially during their formative years, where young wood ducks mainly consume insects and invertebrates. Additionally, they are known to forage in fields for waste grain, supplementing their nutritional intake.

Bird feeders

Wood ducks are not frequent visitors to standard backyard bird feeders. However, if located near their natural habitats, they might occasionally feed on seeds or grains intended for other birds. Nonetheless, their preference remains towards naturally available food sources in their environment.

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Mallard

Anas platyrhynchos

Also known as: Wild Duck

How to recognise a mallard?

General appearance

Mallards are medium-sized dabbling ducks, often seen in and around water bodies. They have a robust body with a round head and a distinctive flat bill. They exhibit a characteristic strong, direct flight.

Male vs female

Male mallards are known for their iridescent green heads, white ring around the neck, and chestnut-brown chest, while females are mottled brown with an orange bill marked with black. Both sexes have a blue speculum bordered with white on their wings. Males lose their bright colors and resemble females during the eclipse plumage in late summer.

Juvenile

Juvenile mallards resemble adult females with their mottled brown coloration but are generally duller and lack the distinct markings. As they mature, young males slowly transition to their vibrant adult plumage. They can often be seen in flocks with adults, using wetlands and ponds for feeding.

Size

19.7 - 27.6 in/25.9 - 63.5 oz

Habitat

Primary habitat

Mallards primarily favor fresh water habitats like marshes, wooded swamps, ponds, and lakes. They are most abundant in prairie potholes and semi-open country north of the prairies during summer, and in swamps and lakes of the lower Mississippi Valley in winter.

Additional range

Besides their primary habitats, mallards can also be found in grain fields, rivers, bays, city parks, and other aquatic environments. During winter, they sparingly occupy coastal waters, particularly sheltered bays and estuaries.

Range Map

What do mallards like to eat?

Natural diet

Mallards are omnivorous and their natural diet primarily consists of plant material such as seeds, stems, and roots from a wide variety of plants, including sedges, grasses, pondweeds, and smartweeds. They also consume acorns, other tree seeds, and waste grain. In addition to plants, their diet includes insects, crustaceans, mollusks, tadpoles, frogs, earthworms, and small fish. Young ducklings often feed mostly on aquatic insects.

Bird feeders

At bird feeders, mallards may consume grains and seeds similar to those found in their natural habitat. It's common for them to eat offerings such as cracked corn and birdseed mixes provided by humans.

What does a mallard sound like?

Mallard vocalizations are distinguishable between sexes. The male mallard typically utters soft, reedy notes, while the female produces a louder, distinctive quack. The call pattern is typically flat and simple. Both sexes employ croaking or quacking types of calls, with the male's croak often being softer and the female's quack being notably louder and stronger. These sounds are communicative signals to draw the attention or respond to fellow mallards.

Call

Audio by Joost van Bruggen

/ CC BY-NC-ND 4.0

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Wood Duck

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Mallard

Wood Duck

Aix sponsa

Also known as: Carolina Duck

General appearance

Wood ducks are small to medium-sized perching ducks with a distinctive shape, featuring a boxy, crested head and a long tail. They exhibit broad, multicolored wings and a unique iridescence on their plumage. Wood ducks are most commonly found near wooded swamps, shallow lakes, and freshwater marshes.

Male vs female

Male wood ducks display a striking array of colors with iridescent greens, purples, and blues, a glossy green head, bright red eyes, and a distinctive white throat patch framed by black lines. Females, in contrast, have a more subdued appearance with grayish-brown plumage, a white eye-ring, and an overall mottled pattern. Both sexes have a unique, thin white bill with a dark tip.

Juvenile

Juvenile wood ducks resemble females with their duller coloration, though their plumage is generally even more muted. They lack the iridescent sheen of adult males and have less developed crests. As they mature, juveniles gradually develop characteristic markings and begin to show gender-specific coloration patterns as they reach adulthood.

Size

18.5 - 21.3 in/19.1 - 26.5 oz

There's more to learn about Wood Duck

View full details

Mallard

Anas platyrhynchos

Also known as: Wild Duck

General appearance

Mallards are medium-sized dabbling ducks, often seen in and around water bodies. They have a robust body with a round head and a distinctive flat bill. They exhibit a characteristic strong, direct flight.

Male vs female

Male mallards are known for their iridescent green heads, white ring around the neck, and chestnut-brown chest, while females are mottled brown with an orange bill marked with black. Both sexes have a blue speculum bordered with white on their wings. Males lose their bright colors and resemble females during the eclipse plumage in late summer.

Juvenile

Juvenile mallards resemble adult females with their mottled brown coloration but are generally duller and lack the distinct markings. As they mature, young males slowly transition to their vibrant adult plumage. They can often be seen in flocks with adults, using wetlands and ponds for feeding.

Size

19.7 - 27.6 in/25.9 - 63.5 oz

There's more to learn about Mallard

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How to tell the Wood Duck from the Mallard

Visual differences

The Wood Duck is smaller (17-21 in., 1.2-1.7 lbs) with a distinctively boxy, crested head and long tail, exhibiting iridescent multi-colored plumage in males. They have a thin white bill with a dark tip. Female Wood Ducks are grayish-brown with a white eye-ring. The Mallard is larger (20-28 in., 1.6-4 lbs) with a robust body, round head, and flat bill. Male Mallards have an iridescent green head and chestnut-brown chest. Both sexes have a blue wing speculum with white borders.

Key differences and behavior

Wood Ducks and Mallards exhibit distinct behavioral differences. Wood Ducks are often found in wooded swamps and freshwater marshes, utilizing tree cavities and nest boxes, whereas Mallards prefer more varied aquatic environments including urban areas, marshes, and grain fields. Wood Ducks, unique among North American ducks, can breed twice a year, while Mallards typically breed once, selecting ground-level nests. In feeding, Wood Ducks focus primarily on seeds, with acorns being significant, and rely heavily on insects in youth. Mallards, being omnivorous, have a broader diet, consuming plant material, aquatic insects, and small vertebrates. Vocal behavior also varies; female Mallards are recognized by their quacking, whereas Wood Ducks are generally less vocal. These behavioral distinctions aid in field identification beyond visual cues.

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Habitat

What do mallards like to eat?

What does a mallard sound like?

Call

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How to tell the Wood Duck from the Mallard

Visual differences

Key differences and behavior

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