26 Species Of Ducks In Colorado (ID, Calls, Season Guide)
Most people know a few duck species, but I bet you’re surprised by the number of duck species that can be spotted in Colorado.
This guide will help you identify all the species of ducks that can be spotted in Colorado with photo IDs and descriptions, audio recordings of their calls, fun facts, and more. Also, get a guide to help you identify ducks using clues such as ‘where is the white’ at the end of this article.
Ducks belong to many subfamilies, which also include swans and geese, but there is some debate and changing family groups for some species.
Ducks are omnivores and eat both plants and animals, especially insects, crustaceans, and small fish. They will eat plants both in the water and on land.
Ducks have hard pointed structures called lamellae around the edge of their beaks that look with teeth which they use to grasp vegetation and filter food through the water.
Male ducks are called drakes, and they are more colorful than females. Female ducks are either called ducks or hens. All domesticated ducks are descended from the mallard.
There are three types of Ducks that you may spot, and they are:
Dabbling Ducks – are freshwater ducks that feed on the surface of the water or by tipping up with their heads into the water and their rears into the air
Diving Ducks – are so called as they dive to the bottom of deeper water in search of food in freshwater, tidal lagoons, and estuaries
Sea Ducks – are also diving ducks but are different from other diving ducks. They spend the majority of their time out at sea in winter and often breed in the far north
This guide will help you identify the types of ducks spotted in Colorado that are classed as regularly occurring according to avibase and the American Birding Association and uses data collected from bird watchers on ebird to give real information about when these birds can be spotted.
Ducks in Colorado in summer: Blue-winged Teal, Cinnamon Teal
Ducks in Colorado in winter: Northern Shoveler, American Wigeon, Northern Pintail, Bufflehead, Ring-necked Duck, Lesser Scaup, Canvasback, Greater Scaup, Common Goldeneye, Common Merganser, Hooded Merganser, Red-breasted Merganser, Barrow’s Goldeneye, Long-tailed Duck, White-winged Scoter, Black Scoter
Ducks in Colorado during migration: Surf Scoter
Types Of Ducks In Colorado:
There are 10 types of dabbling ducks, 7 types of diving ducks, and 9 types of sea ducks that have been spotted in Colorado.
Dabbling Ducks (10 Species)
Dabbling ducks are freshwater ducks that feed on the surface of the water or by tipping up with their heads into the water and their rears into the air.
They sweep their heads from side to side while taking small ‘bites’ or ‘nibbles’ of the water to filter out plants. They also feed on land for seeds and grain or insects.
There is still some debate about whether some of these ducks should be included in a different subfamily, and these include Wood Ducks, Mandarin Ducks, and Muscovy Ducks.
Mallards are very common and can be spotted in Colorado all year. They are recorded in 29% of summer and winter checklists submitted by bird watchers for the state.
Mallards are large ducks, and the males have striking green heads. They also have bright yellow bills and gray bodies with brown breasts and black towards the tail. They have a curl of tail feathers and a blue patch on the wings bordered with white which is called a speculum.
Females and juveniles are mottled brown with orange bills but still have the blue speculum.
Scientific Name: Anas platyrhynchos
Length: 19.7-25.6 in (50-65 cm)
Weight: 35.3-45.9 oz (1000-1300 g)
Wingspan: 32.3-37.4 in (82-95 cm)
Mallards remain all year in most of the lower 48 and the western coast of Canada and Alaska. Those that breed in Canada and Alaska head south to the southern United States and northern Mexico.
Mallards are one of the most commonly spotted and recognizable ducks that will happily be fed on ponds and rivers. They are dabbling ducks that feed on water plants and do not dive. They are very long-lived, and they have been recorded at 27 years old.
Male Mallards don’t quack, only females do. Instead, the male makes a rasping sound.
Male Mallard Call
Female Mallard Call
Nests of mallards are on the ground on land but close to the water. They are usually hidden under overhanging grass and made in a depression on the ground, filled with vegetation pulled from the surrounding area.
They lay up to thirteen eggs which take about 3 to 4 weeks to hatch, and the ducklings are ready to leave the nest almost immediately.
Fun Fact: Most domesticated ducks are descended from Mallards, and they have been hunted and bred for food.
Gadwalls can be found in Colorado all year. They appear in 7% of summer checklists and 10% of winter checklists.
Gadwalls are large dabbling ducks that stand out despite their understated coloring. Compared to other bright and colorful dabbling ducks, Gadwalls are subtly colored with dark-brown heads, black, scaled patterns on the chest and shoulder, gray or white on their bellies, and black bottoms.
When in flight, a small, white patch can be seen on their wings. Females are generally brown all-over, with a more diffused scale pattern on their shoulder, back, chest and bottom.
Length: 48 – 58 cm (19 – 23 in)
Weight: 1000 g (35.27 oz)
Wingspan: 79 – 91 cm (31 – 36 in)
Gadwalls breed in the plains of the United States and Canada before migrating to central and southern US states and Mexico. Some remain all year on the West Coast.
You can find Gadwalls in open wetlands, grasslands, and marshes with dense vegetation. In winter, you can see Gadwalls in saltwater marshes, city parks, reservoirs, and muddy estuaries.
Gadwalls feed themselves by dabbling in shallow water. They submerge their heads until they can reach for plants and other vegetation underwater. They may occasionally feed on insects, too.
Gadwall Calls: Male Gadwalls make short reedy whistles, followed by a quack. Females quack and sound similar to mallards.
Male Gadwall call
Female Gadwall call
Nests of Gadwalls are often hard to find because they’re hidden in dense vegetation near water. They are made with grass and weeds and lined with feathers. There may be as many as fifteen eggs in a nest. The female incubates them for about twenty-seven days until they’re hatched.
Fun Fact: Gadwalls sometimes steal food from other dabbling ducks as they surface from diving.
3. Northern Shoveler
Northern Shovelers are often spotted in Colorado during winter and occur in 10% of checklists at this time. They are usually spotted from mid-October to April, but some have been spotted all year and appear in 4% of summer checklists.
Northern Shovelers are dabbling ducks, and males have green heads and large spoon-shaped black beaks that make them easy to spot. They have reddish-brown sides, white chests, and black backs. Males also have blue patches on the wings.
Females are mottled brown with a blue shoulder patch and large orange beaks.
ScientificName: Spatula clypeata
Length: 17.3-20.1 in (44-51 cm)
Weight: 14.1-28.9 oz (400-820 g)
Wingspan: 27.2-33.1 in (69-84 cm)
Northern Shovelers spend the winter in the southern half of the US and along the Pacific and Atlantic Coasts up to Canada. They migrate to the western half of Canada and northwestern US states for breeding in the summer. Some also breed around the Great Lakes.
You can find Northern Shovelers in sociable groups in shallow, stagnant water.
Crustaceans, invertebrates, and some seeds make up the diet of shovelers, and they filter them out by stirring up the bottom and swinging their bills from side to side through the water. They then push the water out through comblike projections called lamellae along the edge of their bills, catching any food.
Northern Shoveler Calls: Male Northern Shoveler calls sound like ‘hook-hook’ or ‘took-took’. Females have a nasal quack.
Male Northern Shoveler call
Female Northern Shoveler call
Northern Shovelers nest on the ground in short vegetation close to water. They lay around ten eggs, which take 3 to 4 weeks to hatch. The ducklings are able to walk and swim immediately.
Fun Fact: Northern Shovelers will sometimes form large groups that swim in circles to help stir up the bottom for feeding.
4. American Wigeon
American Wigeons are found in Colorado mostly during winter from October to April. However, some stay all year. They are recorded in 2% of summer checklists and 10% of winter checklists.
American Wigeons are small ducks with green stripes on the sides of their heads and with white caps on the males. The rest of them are grayish-brown.
Females are brown with grayish-brown heads. Male and females both have pale beaks.
ScientificName: Mareca americana
Length: 16.5-23.2 in (42-59 cm)
Weight: 19.1-46.9 oz (540-1330 g)
Wingspan: 33.1 in (84 cm)
American Wigeon breed predominantly in Alaska, western Canada, and northwestern US states. They spend the winter in the southern and central US states and along the Pacific and Atlantic coasts.
You can find American Wigeon feeding on vegetation both in the water and on the land in wetlands, fields, and ponds. They will also eat insects and invertebrates.
American Wigeon Calls: Male American Wigeons give a high-pitched whistle, and females make a harsh grunt.
Male American Wigeon call
Female American Wigeon call
Nests of American Wigeon are on the ground, far from water in fields and grasslands. The female lines the depression in the ground with grass, reeds, and down feathers, then they lay up to 13 eggs which take 2 to 3 weeks to hatch. The ducklings leave the nest almost immediately.
Fun Fact: American Wigeons are known as ‘baldpate’ because their white stripe looks like a bald man’s head.
5. Green-winged Teal
Green-winged Teal are seen in Colorado all year but they are more common during migration. They appear in 3% of summer checklists, 7% of winter checklists, and up to 18% of checklists during migration.
Green-winged Teal are small dabbling ducks. Males have a green stripe along the sides of their heads. The rest of their heads are brown, and they have grayish bodies.
Females are brown with a yellow streak along the tail. Both males and females have a green wing patch.
ScientificName: Anas crecca
Length: 12.2-15.3 in (31-39 cm)
Weight: 4.9-17.6 oz (140-500 g)
Wingspan: 20.5-23.2 in (52-59 cm)
Most Green-winged Teal migrate from breeding grounds in Alaska, Canada, and northern US states to the southern US states and the Pacific Coast. However, some ducks remain around the Rocky Mountains all year.
You can find Green-winged Teal on flooded ground and shallow ponds in large flocks of up to 50 thousand. They feed on invertebrates and seeds.
Nests of Green-winged Teal are on the ground in dense cover such as grass or thickets.
Green-winged Teal Calls: Male Green-winged Teal whistle and chatter, and females have a high-pitched quack.
Male Green-winged Teal
Female Green-winged Teal
Nests of Green-winged Teal are on the ground in meadows and grasslands and near to water. They lay up to 9 eggs, which take around 3 weeks to hatch. The ducklings are ready to leave the nest almost immediately.
Fun Fact: Green-winged Teal don’t need to run across the surface of the water to take off. They can fly straight away as they are so agile.
6. Blue-winged Teal
Blue-winged Teals are usually seen in Colorado during summer but their numbers increase during migration from April to May and September to October. They are recorded in 17% of checklists during spring migration and 6% of checklists during fall migration.
Blue-winged teals are small ducks from the Anatidae family. Their head is bluish-gray with a white crescent in front of their eyes. Their body is spotted brown from the chest to the tail.
When their wings are unfurled, there is a distinct blue patch on the shoulders bordered with green and white. Females have the same scaly, brown pattern on their bodies, but they have no distinctive white markings on their faces.
Length: 38 – 43 cm (15 – 17 in)
Weight: 544 g (19.18 oz)
Wingspan: 58 – 79 cm (23 -31 in)
Blue-winged Teals breed in the US and Canada before migrating to Florida, the Gulf Coast, southern West Coast, Mexico, Central and northern South America, and the Caribbean.
You can find Blue-winged Teals on shorelines with calm or sluggish water, so lakes and ponds with protruding trees and rocks are perfect. They also live around shallow water sources with abundant vegetation, like marshes and swamps. During the breeding season, you’ll find them in northern prairies and parklands.
Blue-winged Teals mostly eat aquatic plants that they find on the surface of their water. They may also eat aquatic insects, particularly during the breeding season.
Blue-winged Calls: They make high-pitched chattering calls, and females also quack.
Blue-winged Teals chattering calls
Female Blue-winged Teal Quack
Nests of Blue-winged Teals are often found in a hollow in the ground, sheltered behind tall grasses and near a water source. They are built from grass and weeds and lined with down.
Females lay up to fifteen eggs that they incubate for 2 to 3 weeks. The young ducklings may be able to walk a few hours after hatching, but they can only fly after six to seven weeks.
Fun Fact: Because of their long, over-ocean migration patterns, Blue-winged Teals have the highest mortality rate among dabbling ducks.
7. Cinnamon Teal
Cinnamon Teals can be spotted in Colorado from February to November and occur in 4% of summer checklists.
Cinnamon Teal breeding males are the reason why these birds are named as such. They’re cinnamon-colored all over during the breeding season, and even their eyes are red. On their backs, they have a scaly reddish-brown patch. They have a pale blue shoulder, and a white line that separates it from the greenish lower wing.
Males will molt this glossy coloring and will then look similar to the females in winter. Females are brown with a scaly pattern on their chest, belly, and back.
Length: 36 – 43 cm. (14- 17 in)
Weight: 465 g (16.4 oz.)
Wingspan: 61 -76 cm (24 – 30 in)
Cinnamon Teals breed in western US states and southwestern Canada before migrating for winter to Mexico and South America. Some ducks remain all year in southwestern US states, Mexico, and South America.
You can find Cinnamon Teals in freshwater marshes and ponds. Cinnamon Teals belong to the Dabbling Duck family, so they live on food that they can find by skimming the surface of the water, especially in shallow water. They eat seeds, plants, and aquatic insects. They may opt to dabble just below the surface for submerged plants in deeper waters.
Cinnamon Teal calls:
Male Cinnamon Teal
Female Cinnamon Teal
Nests of Cinnamon Teals are built on the ground, usually sheltered among tall grasses and vegetation but still near the water. The nests are made with grass made even softer with down. There can be up to twelve eggs in a nest, and it takes up to twenty-five days for the eggs to hatch. After about 50 days, the young are able to fly on their own.
Fun Fact: Cinnamon Teals change breeding partners every year.
8. Wood Duck
Wood Ducks are found all year in Colorado. They appear in 3% of summer checklits and 1% of winter checklists.
Male Wood Ducks have beautiful green heads with a striking crest at the back and black and white markings, and red eyes. They really are birds with great hairdos.
Their bodies are a checkerboard of colors, with reddish-brown chests, buff sides, brown backs and tails, white markings, and flashes of blue.
Females are brown with grayish-brown heads and white around their dark eyes. They have blue patches called speculum on their wings.
Scientific Name: Aix sponsa
Length: 18.5-21.3 in (47-54 cm)
Weight: 16.0-30.4 oz (454-862 g)
Wingspan: 26.0-28.7 in (66-73 cm)
Wood Ducks are residents of eastern US states and along the Pacific Coast and parts of the northwest. Wood Ducks that breed in the north along the border with Canada migrate for winter to southern US states and Mexico.
You can find Wood Ducks in wooded swamps, and they eat seeds, fruit, and insects, usually in the water, but they will also feed on land in fields and forests.
Wood Ducks Calls:
Male Wood Ducks make a rising whistle, and female Wood ducks make a distinctive 2-note call.
Male Wood Duck call
Female Wood Duck call
Nests of Wood Ducks are usually in tree cavities, very near to water, and may be up to 60 feet off the ground. Females line the nest with down feathers plucked from their breasts. They lay up to sixteen eggs, which take 4 or 5 weeks to hatch, and the young use their clawed feet to climb out before jumping out.
Fun Fact: Female Wood Ducks often lay their eggs in other Wood Duck nests to be raised by others.
9. Northern Pintail
Northern Pintails appear in 3% of winter checklists. They have been seen in Colorado all year but are spotted more from September to April.
Northern Pintails are ducks known for their long pointy tails. Males have a beautiful brown head, with a contrasting white vertical stripe down their neck. Their bodies are white, and they have gray, white, and black patterns on their back. When in flight, their wings display a green patch.
Females are brown with intricate scaled patterns on their bodies. They also have a brown patch on their wings.
Length: 51 – 66 cm (20 – 26 in)
Weight: 1030 g (36.33 oz)
Wingspan: 74 – 89 cm ( 29 – 35 in)
Northern Pintail breed in Canada, Alaska, and the Midwest before migrating to southern and coastal US states.
You can find Northern Pintails living with other duck species in open wetlands, marshes, prairies, and even in agricultural fields. They forage on the edges of lakes and ponds but are known to dabble in open water with other ducks. During winter, they will migrate to coastal lagoons, sheltered estuaries, and brackish marshes.
Northern Pintails have a distinct advantage over ducks when dabbling for food. With their long necks, they can reach 12 inches deep into the water, much further than other ducks. They feed on seeds and roots of aquatic vegetation. They also eat seeds and grain from agricultural fields. During the breeding season, they eat more animals for protein, like aquatic insects and mollusks such as snails.
Northern Pintail calls:
Male Northern Pintail
Female Northern Pintail
Nests of Northern Pintails are usually found in shallow hollows on the ground, close to a water source. They are made with grasses and feathers and serve as home to at least twelve eggs.
The female incubates them for as many as twenty-five days and will lead the young to the water as soon as they’re hatched so they can feed on insects by themselves. They can fly in about fifty days but will not leave the nest until the female has completed molting.
Fun Fact: Because Northern Pintails are agile and speedy birds, they are often hunted as a challenge in game shooting.