The red-knobbed coot or crested coot (Fulica cristata) is a member of the rail and crake bird family, the Rallidae.

It is a resident breeder across much of Africa and in southernmost Spain on freshwater lakes and ponds. It builds a nest of dead reeds near the water's edge or more commonly afloat, laying about 7 eggs (or more in good conditions).

Taxonomy

The red-knobbed coot was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with all the other coots in the genus Fulica and coined the binomial name Fulica cristata. Gmelin based his account on the earlier descriptions by the French naturalist Georges-Louis Leclerc, Comte de Buffon and the English ornithologist John Latham, neither of whom had included a binomial name. They gave the type locality as Madagascar. The genus Fulica had been introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. The genus name is the Latin word for a Eurasian coot. The specific epithet cristata is from Latin cristatus meaning "crested" or "plumed". The species is monotypic: no subspecies are recognised.

Description

left|thumb|Head of a bird in breeding condition, South Africa

left|thumb|non-breeding condition, [[Ethiopia]]

The red-knobbed coot is largely black except for the white frontal shield. It is long, spans across the wings. Males weigh , females are slightly smaller and weigh . The sexes are alike. As a swimming species, it has partial webbing on its long strong toes. The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult's black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old, some time later.

A good view is necessary to separate this species from the Eurasian coot, with which its range overlaps in northwestern

Africa and southern Iberia. There are two tiny red knobs at the top of the facial shield, which are not visible at any great distance and are only present in the breeding season; the black feathering between the shield and the bill is rounded, whereas in Eurasian it comes to a point; and the bill has a bluish grey tinge. In flight, the red-knobbed coot lacks the white trailing edge to the secondaries of the Eurasian coot.

This is a noisy bird during mating, but its vocalisations are quite different from the Eurasian coot. It gives a fast kerrre like the little crake, a harsh ka-haa and a grunting hoot "oot oot" that suggests that the name "coot" might be onomatopoeia, but inspection of the etymology of "coot" fairly decisively negates any such suggestion.

References

Sources

  • Rails by Taylor and van Perlo,
  • Forsman, Dick (1991) Aspects of identification of Crested Coot Dutch Birding 13(4): 121-25
  • Red-knobbed coot - Species text in The Atlas of Southern African Birds
  • Red-knobbed coot videos, photos & sounds on the Internet Bird Collection