Tachybaptus Ruficollis

The little grebe (''Tachybaptus ruficollis''), also known as dabchick, is a member of the grebe family of water birds. The genus name is from Ancient Greek ''takhus'' "fast" and ''bapto'' "to sink under". The specific ''ruficollis'' is from Latin ''rufus'' "red" and Modern Latin ''-collis'', "-necked", itself derived from Latin ''collum'' "neck".

At in length it is the smallest European member of its family. It is commonly found in open bodies of water across most of its range.

Taxonomy

The little grebe was described by the German naturalist Peter Simon Pallas in 1764 and given the binomial name ''Colymbus ruficollis''. The tricolored grebe was formerly considered conspecific, with some taxonomic authorities still considering it so.

Subspecies

Seven subspecies are currently accepted, four widespread, and three with restricted ranges; they are separated principally by size, eye colour, which varies from dark to light from west to east, and extent of white on the secondary feathers of the wing, which varies from none in temperate northern regions, to extensive white in tropical regions.

Description

The little grebe is a small water bird with a pointed bill. The adult is unmistakable in summer, predominantly dark above with its rich, rufous colour neck, cheeks and flanks, and bright yellow gape. The rufous is replaced by a dirty brownish grey in non-breeding and juvenile birds.

Juvenile birds have a yellow bill with a small black tip, and black and white streaks on the cheeks and sides of the neck as seen below. This yellow bill darkens as the juveniles age, eventually turning black in adulthood.

In winter, its size, buff plumage, with a darker back and cap, and “powder puff” rear end enable easy identification of this species. The little grebe's breeding call, given singly or in duet, is a trilled repeated ''weet-weet-weet'' or ''wee-wee-wee'' which sounds like a horse whinnying.

Distribution

This bird breeds in small colonies in heavily vegetated areas of freshwater lakes across Europe, much of Asia down to New Guinea, and most of Africa. Most birds move to more open or coastal waters in winter, but it is only migratory in those parts of its range where the waters freeze. Outside of breeding season, it moves into more open water, occasionally even appearing on the coast in small bays.

Behaviour

The little grebe is an excellent swimmer and diver and pursues its fish and aquatic invertebrate prey underwater. It uses the vegetation skilfully as a hiding place.

Like all grebes, it nests at the water's edge, since its legs are set very far back and it cannot walk well. Usually four to seven eggs are laid. When the adult bird leaves the nest it usually takes care to cover the eggs with weeds. This makes it less likely to be detected by predators. The young leave the nest and can swim soon after hatching, and chicks are often carried on the backs of the swimming adults. In India, the species breeds during the rainy season.

Gallery

Zampullín corriendo sobre el agua - little grebe running on the water.jpg, ''T. r. ruficollis'' in Spain; no white in the wing
File:カイツブリ, Little grebe ー 東京港野鳥公園.jpg, ''T. r. poggei'' in Japan; no white in the wing
Little Grebe by Tisha Mukherjee 27.jpg, ''T. r. albescens'' in India; extensive white in the wing
File:LittleGrebe DSC0240.jpg, Nest at edge of lake in Jodhpur, Rajasthan, India
File:Non breeding Little Grebe.jpg, Grebe displaying its webbed feet
File:Tachybaptus ruficollis-diving.jpg, Diving at Delta del Llobregat, Barcelona
File:Zampullín chico, polluelo Tachybaptus ruficollis.jpg, Chick
File:Tachybaptus ruficollis MWNH 1919.JPG, Eggs, Collection Museum Wiesbaden

References

External links

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BTO BirdFacts - Little Grebe

Grebes of the World
by André Konter

Information and Illustration on Little Grebe from A Field Guide to Birds of Armenia
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{{Authority control

little grebe
Birds of Africa
Birds of Eurasia
Birds of Japan
little grebe
Taxa named by Peter Simon Pallas
Birds of Nepal