Eurasian coot

The Eurasian coot was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under its current binomial name Fulica atra. Linnaeus specified the locality as Europe but this is now restricted to Sweden. The binomial name is from Latin: Fulica means 'coot', and atra means 'black'. Four subspecies are recognised: • F. a. atra Linnaeus, 1758 – Europe and north Africa to Japan, India, southeast Asia, Philippines and Borneo • F. a. lugubris Müller, S, 1847 – Java, Bali, northwest New Guinea • F. a. novaeguineae Rand, 1940 – central New Guinea • F. a. australis Gould, 1845 – Australia and New Zealand An extinct subspecies F. atra pontica has been described from the Chalcolithic (around 4800–4400 BP) from the Bulgarian Black Sea Coast. ==Description==

, London The Eurasian coot is in length with a wing-span of ; males weigh around and females . It is largely black except for the white bill and frontal shield (which gives rise to the phrase "as bald as a coot", in use as early as 1430). As a swimming species, the coot has partial webbing on its long, strong toes. The sexes are similar in appearance. The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old. The Eurasian coot is a noisy bird with a wide repertoire of crackling, explosive, or trumpeting calls, often given at night. ==Distribution and habitat==

The coot breeds across much of the Old World on freshwater lakes and ponds, and like its relative the common moorhen, has adapted well to living in urban environments, often being found in parks and gardens with access to water. It occurs and breeds in Europe, Asia, Australia, and Africa. The species has recently expanded its range into New Zealand. It is resident in the milder parts of its range, but migrates further south and west from much of Asia in winter as the waters freeze. It is known to occur as a vagrant in North America. ==Behaviour and ecology==

The Eurasian coot is much less secretive than most of the rail family, and can be seen swimming on open water or walking across waterside grasslands. It is an aggressive species, and strongly territorial during the breeding season, and both parents are involved in territorial defence. Breeding The nest is a bulky structure that either floats on the water or is built in shallow water on a low or barely submerged stump or log, making a neat, large bowl. It is constructed of plant stems and leaves with a lining of finer material. Normally concealed in vegetation the nest can sometimes be placed in the open. It is built by both sexes with the male collecting most of the material which is incorporated by the female. The eggs are laid at daily intervals. The clutch usually contains between six and ten smooth and slightly glossy buff coloured eggs that are covered with black or dark brown speckles. On average they are and weigh . The eggs are incubated by both sexes beginning after the second egg is laid and hatch asynchronously after 21 to 24 days. The chicks are precocial and nidifugous. The chicks are covered with a black down. On the body the down has yellow hair-like tips. On the sides of the head, nape and throat the hair-like tips are longer and orange-red. Between the eyes and on the lores, the tips are red. The shield is bright red and the bill is red with a white tip. The young are brooded by the female for the first three to four days during which time food is brought by the male. The male also builds one or more platforms that is used for roosting and brooding the chicks. On leaving the nest, the brood is sometimes split up with each parent taking care of a separate group. The young can feed themselves when they are around 30 days and fledge at 55 to 60 days. Eurasian coots normally only have a single brood each year but in some areas such as Britain they will sometimes attempt a second brood. They first breed when they are one to two years old. Chick mortality occurs mainly due to starvation rather than predation. Most chicks died in the first 10 days after hatching, when they are most dependent on adults for food. Coots can be very brutal to their own young under pressure such as the lack of food. They will bite young that are begging for food and repeatedly do this until it stops begging. If the begging continues, they may bite so hard that the chick is killed. Coots will also lay their eggs in the nests of other coots when their environment or physical condition limits their ability to breed, or to lengthen their reproductive life. 2 Kilogramm wird ein gut genährter Graureiher schwer. 08.jpg|Adult defending its mate and nest from a grey heron (Ardea cinerea) Eurasian coot (Fulica atra) with chicks.jpg|Adult with chicks, Trujillo, Spain Eurasian coot (Fulica atra) juvenile.jpg|Chick in Marais Audomarois, France Baby Eurasian coot foraging (52284).webm|Chick picking through wet leaves in Sweden Australian coot (Fulica atra australis) Adelaide.jpg|Adult F. a. australis Australian coot (Fulica atra australis) juvenile Mount Lofty.jpg|Juvenile F. a. australis Лысуха (Fulica atra), Калининград.jpg|Adult F. a. atra Feeding The coot is an omnivore, and will take a variety of small live prey including the eggs of other water birds, as well as algae, vegetation, seeds and fruit. It shows considerable variation in its feeding techniques, grazing on land or in the water. In the water it may upend in the fashion of a mallard or dive in search of food. ==Status==

The Eurasian coot is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies. ==References==