American Coot

About

The American Coot is a medium-sized water bird, often mistaken for a duck due to its aquatic habits, but it is actually a member of the rail family. It is characterized by its dark body, white bill, and prominent white frontal shield. Coots are highly adaptable and commonly found on various freshwater bodies across North America.

Size & lifespan

Length

34-43 cm (13-17 in)

Wingspan

58-71 cm (23-28 in)

Weight

427-848 g (15.1-29.9 oz)

Lifespan

6-9 years in the wild, up to 22 years in captivity

Diet

Omnivore, primarily consuming aquatic vegetation, seeds, insects, small fish, and invertebrates.

Physical characteristics

Plumage

Adults have a sooty gray to black body plumage, with a slightly paler gray head and neck. The undertail coverts are white, often visible when the bird is swimming or walking. The wings are dark, with a narrow white trailing edge that is most noticeable in flight.

Beak shape

Conical, ivory-white bill with a dark band near the tip. A prominent, fleshy, white frontal shield extends from the base of the bill onto the forehead.

Eye color

Dark red to reddish-brown.

Leg color

Yellowish-green to olive-green legs and feet. The feet are large and lobed, not fully webbed like ducks, which aids in both swimming and walking on land.

Distinguishing features

The most distinctive features are the bright white bill and frontal shield, and the lobed feet. They also exhibit a characteristic head-pumping motion while swimming.

Juvenile appearance

Juveniles are paler gray-brown overall, with a whitish throat and breast. Their bill is duller, often grayish, and the frontal shield is smaller and less developed, sometimes pinkish or yellowish. They lack the reddish eye color of adults.

Seasonal changes

No significant seasonal plumage changes. The brightness of the frontal shield may vary slightly with breeding condition.

Sexual dimorphism

Males and females are generally monomorphic in plumage, though males tend to be slightly larger than females. During breeding season, the frontal shield of males may appear slightly larger and more prominent.

How to identify

1. 1

   Bill and Frontal Shield

   Look for the distinctive ivory-white bill with a dark band near the tip, and the prominent white frontal shield extending onto the forehead. This is the most reliable field mark.

2. 2

   Plumage Color

   Observe the overall sooty gray to black body plumage, with a slightly paler head and neck. Note the white undertail coverts, especially when the bird is swimming or preening.

3. 3

   Legs and Feet

   If visible, note the yellowish-green legs and large, lobed (not fully webbed) feet. These are unique among common North American water birds.

4. 4

   Swimming Behavior

   Watch for the characteristic head-pumping motion while swimming. They often dive for food, disappearing for several seconds before resurfacing.

5. 5

   Flight

   In flight, look for the dark body, rapid wingbeats, and the narrow white trailing edge on the secondary feathers, along with the white undertail coverts.

6. 6

   Vocalizations

   Listen for their distinctive sharp, explosive 'keks' or 'piks', especially when alarmed or interacting with other coots.

Habitat & range

Biomes

Freshwater wetlands, marshes, ponds, lakes, slow-moving rivers, and occasionally brackish water.

Geographic range

Widespread across North America, from southern Canada through the United States and Mexico, extending into Central America and parts of the Caribbean. Some populations are resident, while northern populations are migratory.

Elevation range

Sea level up to approximately 3,000 meters (10,000 feet) in mountainous regions.

Preferred environments

Shallow, open water with abundant emergent and submerged aquatic vegetation for food and cover. They prefer areas with dense cattails, reeds, or rushes for nesting and refuge.

Behavior

Activity time

Diurnal, most active during daylight hours for foraging and social interactions.

Feeding habits

Forages by dabbling, diving, and grazing on land. They often dive to retrieve submerged vegetation, or pick seeds and insects from the water surface. They also graze on grasses and other plants near the water's edge. They can be seen stealing food from ducks.

Social behavior

Highly social, especially outside the breeding season, forming large flocks that can number in the thousands. During breeding, they are territorial and can be aggressive towards other coots and water birds.

Flight pattern

Flies with rapid wingbeats, often running across the water surface to gain momentum before taking off. In flight, their dark body contrasts with the white trailing edge of the wings and white undertail coverts. They are strong, direct fliers during migration.

Migration pattern

Northern populations are migratory, moving south for the winter to the southern United States, Mexico, and Central America. Southern populations are largely resident. Migration occurs primarily at night.

Territoriality

Strongly territorial during the breeding season, defending nesting sites and foraging areas from conspecifics and other water birds. Displays include chasing, pecking, and splashing water.

Breeding & reproduction

Breeding season

Typically April to July, but can vary geographically, starting earlier in southern regions.

Nesting habits

Nests are bulky, floating structures made of dead and live aquatic vegetation, anchored to emergent plants or built on shallow platforms. Both sexes participate in nest building. Nests are often well-concealed within dense marsh vegetation.

Clutch size

Typically 6-12 eggs, but can range from 2 to 15. They may lay multiple clutches in a season.

Egg description

Eggs are buff to pale olive-buff, speckled with fine dark brown or black spots and blotches. They are oval to subelliptical in shape.

Incubation period

21-25 days, primarily by the female, though the male may assist.

Fledging period

Chicks are precocial and leave the nest shortly after hatching, but remain with parents for feeding and protection for 50-70 days until they can fly.

Parental care

Both parents care for the young, feeding them and protecting them from predators. Young coots are often seen riding on the backs of their parents.

Where to find

Field tips

1. Scan Open Water. Coots often forage in open water, so scan the surface of ponds and lakes. Look for their distinctive head-pumping motion.
2. Check Vegetated Edges. They frequently hide and nest in dense emergent vegetation, so check the edges of marshes and wetlands carefully.
3. Listen for Calls. Their sharp calls can often alert you to their presence, especially if they are hidden in vegetation or disturbed.
4. Observe Behavior. Watch for their unique diving and dabbling feeding behaviors, and their tendency to graze on land near the water.
5. Look for Flocks. Outside of breeding season, they often gather in large flocks, making them easier to spot on larger bodies of water.

Similar species

Quick facts

Family:

Rallidae (Rails, Gallinules, and Coots)

Diet:

Omnivorous (aquatic vegetation, seeds, insects, small invertebrates)

Distinguishing Feature:

White bill and frontal shield, lobed feet

Habitat:

Freshwater wetlands, ponds, lakes

Conservation Status:

Least Concern

Migration:

Partial migrant (northern populations migrate south)

Fun facts

• Despite their duck-like appearance and aquatic lifestyle, American Coots are more closely related to cranes than to ducks.
• Their lobed feet, which are not fully webbed, allow them to walk more easily on land and through dense vegetation than ducks, while still providing efficient propulsion in water.
• American Coots are known for their aggressive territorial displays during breeding season, often engaging in fights with other coots and even larger water birds.
• They are sometimes called 'mud hens' due to their dark plumage and preference for muddy, vegetated waters.
• Young coots are born with bright orange-red down on their heads, which is thought to stimulate parental feeding.
• Coots have been observed 'kleptoparasitizing' other birds, meaning they steal food from ducks and other diving birds as they surface.

Scientific classification

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Gruiformes

Family

Rallidae

Genus

Fulica

Species

F. americana

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