American Coot
Encyclopedia

The American Coot (Fulica americana) is a bird of the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Rallidae
Rallidae
The rails, or Rallidae, are a large cosmopolitan family of small to medium-sized birds. The family exhibits considerable diversity and the family also includes the crakes, coots, and gallinules...

, inhabiting wetlands and open water bodies. Measuring 34–43 cm (13.4–16.9 in) in length and 58–71 cm (22.8–28 in) across the wings, adults have a short thick white bill and white frontal shield, which usually has a reddish-brown spot near the top of the bill between the eyes. Body mass in females ranges from 427 to 628 g (0.941373859529427 to 1.4 lb) and in males from 576 to 848 g (1.3 to 1.9 lb).

From up close, a dark band can be distinguished at the billtip. The body is grey with the head and neck darker than the rest of the body. Their legs are yellowish, with lobed toes rather than webbed feet. Their chicks have black bodies with bright red head and beak, and orange plumes around the neck. The call is a high-pitched squeaking honk somewhat like a goose's
Goose
The word goose is the English name for a group of waterfowl, belonging to the family Anatidae. This family also includes swans, most of which are larger than true geese, and ducks, which are smaller....

 but more hollow sounding.

Range

Their breeding habitat is marsh
Marsh
In geography, a marsh, or morass, is a type of wetland that is subject to frequent or continuous flood. Typically the water is shallow and features grasses, rushes, reeds, typhas, sedges, other herbaceous plants, and moss....

es from southern Quebec
Quebec
Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

 to the Pacific coast of North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 and as far south as northern South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

. Birds from temperate North America east of the Rocky Mountains migrate
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...

 to the southern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 and southern British Columbia
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

. They are often year-round residents where water remains open in winter. It is notable that in Ohio
Ohio
Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

, birds apparently move to their breeding range about half a month earlier and leave for winter quarters the same time later than they did 100 years ago. Also, the number of birds that stay year-round near the northern limit of the species' range seems to be increasing.

Although coots seem rather weak fliers, like most rails they have considerable stamina once airborne. This species has crossed the Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

 to reach western Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 at least 23 times since records began, including 12 records in the Azores
Azores
The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the...

 and four in Great Britain
Great Britain
Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

. In December 2003, an individual of this species attempted to overwinter in the Shetland Islands
Shetland Islands
Shetland is a subarctic archipelago of Scotland that lies north and east of mainland Great Britain. The islands lie some to the northeast of Orkney and southeast of the Faroe Islands and form part of the division between the Atlantic Ocean to the west and the North Sea to the east. The total...

, Scotland
Scotland
Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. Two sightings have been found as well in Tasmania
Tasmania
Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...

 on October 2008.

Ecology

These birds require a great deal of effort to become airborne, pedaling across the water with their feet before lifting off. The way in which their heads bob when they walk or swim has earned them the name "marsh hen"or "mud hen".

These birds are frequently seen swimming in open water. They can dive for food but can also forage on land. American Coots are omnivorous
Omnivore
Omnivores are species that eat both plants and animals as their primary food source...

, eating plant material, arthropod
Arthropod
An arthropod is an invertebrate animal having an exoskeleton , a segmented body, and jointed appendages. Arthropods are members of the phylum Arthropoda , and include the insects, arachnids, crustaceans, and others...

s, fish, and other aquatic animals.
They nest in a well-concealed location in tall reeds.

American Coots are highly territorial during the breeding season, with both males and females fighting with neighbors to maintain a small territory where they obtain all their food. The females are known to lay eggs in neighbors' nests (conspecific brood parasitism
Brood parasite
Brood parasites are organisms that use the strategy of brood parasitism, a kind of kleptoparasitism found among birds, fish or insects, involving the manipulation and use of host individuals either of the same or different species to raise the young of the brood-parasite...

); contrary to what one might expect, this behavior is more common among females that already have a nest than among those that were not able to secure a suitable territory for breeding in that season.

Coots are fairly aggressive in defense of their eggs and, in combination with their protected nesting habitat, this undoubtedly help reduce losses of eggs and young to all but most determined and effective predators. American crow
American Crow
The American Crow is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America...

s, black-billed magpie
Black-billed Magpie
The Black-billed Magpie is a bird in the crow family that inhabits the western half of North America. It is notable for its domed nests, and for being one of only four North American songbirds whose tail makes up half or more of the total body length The Black-billed Magpie (Pica hudsonia) is a...

s and forster's tern
Forster's Tern
The Forster's Tern, Sterna forsteri, is a member of the tern family Sternidae. It breeds inland in North America and winters south to the Caribbean and northern South America....

 can sometime take eggs. Mammalian predators (including red fox
Red Fox
The red fox is the largest of the true foxes, as well as being the most geographically spread member of the Carnivora, being distributed across the entire northern hemisphere from the Arctic Circle to North Africa, Central America, and the steppes of Asia...

es, coyote
Coyote
The coyote , also known as the American jackal or the prairie wolf, is a species of canine found throughout North and Central America, ranging from Panama in the south, north through Mexico, the United States and Canada...

s, skunk
Skunk
Skunks are mammals best known for their ability to secrete a liquid with a strong, foul odor. General appearance varies from species to species, from black-and-white to brown or cream colored. Skunks belong to the family Mephitidae and to the order Carnivora...

s and raccoon
Raccoon
Procyon is a genus of nocturnal mammals, comprising three species commonly known as raccoons, in the family Procyonidae. The most familiar species, the common raccoon , is often known simply as "the" raccoon, as the two other raccoon species in the genus are native only to the tropics and are...

s) are able to predate coot nests even more rarely, though nests are regularly destroyed in usurpation by muskrat
Muskrat
The muskrat , the only species in genus Ondatra, is a medium-sized semi-aquatic rodent native to North America, and introduced in parts of Europe, Asia, and South America. The muskrat is found in wetlands and is a very successful animal over a wide range of climates and habitats...

s. Conversely, the bold behavior of immature and adult coots leads to them falling prey with relative regularity once out of the breeding season. Regular, non-nesting-season predators include great horned owl
Great Horned Owl
The Great Horned Owl, , also known as the Tiger Owl, is a large owl native to the Americas. It is an adaptable bird with a vast range and is the most widely distributed true owl in the Americas.-Description:...

s, northern harriers, bald eagle
Bald Eagle
The Bald Eagle is a bird of prey found in North America. It is the national bird and symbol of the United States of America. This sea eagle has two known sub-species and forms a species pair with the White-tailed Eagle...

s, golden eagle
Golden Eagle
The Golden Eagle is one of the best known birds of prey in the Northern Hemisphere. Like all eagles, it belongs to the family Accipitridae. Once widespread across the Holarctic, it has disappeared from many of the more heavily populated areas...

s, american alligator
American Alligator
The American alligator , sometimes referred to colloquially as a gator, is a reptile endemic only to the Southeastern United States. It is one of the two living species of alligator, in the genus Alligator, within the family Alligatoridae...

s, bobcat
Bobcat
The bobcat is a North American mammal of the cat family Felidae, appearing during the Irvingtonian stage of around 1.8 million years ago . With twelve recognized subspecies, it ranges from southern Canada to northern Mexico, including most of the continental United States...

s, great black-backed
Great Black-backed Gull
The Great Black-backed Gull is the largest gull in the world, which breeds on the European and North American coasts and islands of the North Atlantic...

 and california gull
California Gull
The California Gull Larus californicus is a medium-sized gull, smaller on average than the Herring Gull but larger on average than the Ring-billed Gull, though may overlap in size greatly with both....

s. In fact, coots may locally comprise more than 80% of the diet of bald eagles.

Outside the breeding season, particularly in winter, they gather together in sometimes huge groups for protection and socializing. Groups of coots are called covers or rafts.

On the Louisiana coast, the Cajun
Cajun
Cajuns are an ethnic group mainly living in the U.S. state of Louisiana, consisting of the descendants of Acadian exiles...

 word for coot is pouldeau, from French for "coot", poule d'eau - literally "water hen". Coot can be used for cooking; it is somewhat popular in Cajun cuisine
Cajun cuisine
Cajun cuisine is the style of cooking named for the French-speaking Acadian or "Cajun" immigrants deported by the British from Acadia in Canada to the Acadiana region of Louisiana, USA. It is what could be called a rustic cuisine — locally available ingredients predominate, and preparation...

, for instance as an ingredient for gumbo
Gumbo
Gumbo is a stew or soup that originated in southern Louisiana during the 18th century. It consists primarily of a strongly-flavored stock, meat or shellfish, a thickener, and the vegetable holy trinity of celery, bell peppers, and onions...

s cooked at home by duck hunters.

Fossil record

Coot fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

s from the Middle Pleistocene
Pleistocene
The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....

 of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 have been described as Fulica hesterna but cannot be separated from the present-day American Coot. However, the Pleistocene coot Fulica shufeldti (formerly F. minor), famously known as part of the Fossil Lake fauna, quite possibly was a paleosubspecies of the American Coot (as Fulica americana shufeldti) as they only differed marginally in size and proportions from living birds. Thus, it seems that the modern-type American Coots evolved during the mid-late Pleistocene
Pleistocene
The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....

, a few hundred thousand years ago.

External links

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