- Podiceps cristatus
Identification
Photo © by Chris Upson
River Orwell, Ipswich, Suffolk, UK, January 2009
Length 46–61 cm (18-24 in), wingspan 59-73 cm, weight 600-1500 g
- Largest Old World grebe
- Long neck
- Long bill, blackish in summer, pinkish in winter
Adult breeding
- Dark greyish brown above
- White below
- Rufous to dark brown flanks
- Black crown and crest
- Ear coverts form facial ruff, chestnut tipped with black
- Black lores
- Face, chin, throat and foreneck white
- Black hindneck
- Grey sides of neck
- Red iris
- Olive-green to yellow legs
Adult Non-breeding
- Facial ruff and crest lost and become much duller and greyer
- Black cap
- Neck mostly white, with narrow dark line down rear side
- Flanks white to pale brownish
Variations
African and Australasian birds show less seasonal variation, only attaining winter plumage for a short period if at all.
Juvenile
Similar to non-breeding adult, but has striped head
Flight
Shows bold white scapulars and leading and trailing edges to wing.
Distribution
A widespread Old World grebe breeding in Eurasia, Africa and Australasia.
Europe
Breeds across most of the continent from Iberia and the British Isles eastwards ranging north to central parts of Sweden and Finland and south to the Mediterranean coast and Turkey. Range extends eastwards across Asia to China and locally in Japan but absent from most of Arabia, India and south east Asia.
Africa
Breeds, or formerly bred, at a few scattered localities in the north in Morocco, Algeria and Tunisia but more widespread, although discontinuously, south of the Sahara. Breeds in Ethiopia, Kenya and Tanzania, and in the south in Namibia and South Africa.
Australasia
Range is confined mainly to the east in central an southern Queensland, New South Wales and southern South Australia, but also occurs in Tasmania and the south-western corner of Western Australia. In New Zealand occurs on South Island and most numerous in South Westland.
Resident in western Europe but migratory to the north and east and more widespread around the Mediterranean, Black and Caspian Seas in winter. East Asian birds winter in southern Japan and southern China. African and Australian birds are resident, or nomadic following rainfall and avoiding areas affected by drought.
Taxonomy
Subspecies
Three subspecies are usually recognised[1]:
- P. c. cristatus:
- P. c. australis:
- Australia and New Zealand. Very similar to P. c. cristatus
- P. c. infuscatus:
- Sub-saharan Africa. Smaller and with darker flanks, and lacks white over eye.
Habitat
Fresh or rarely brackish waters, usually medium-large with emergent vegetation, often on artificial reservoirs and gravel pits. May move to estuaries, sheltered bays and coastal inlets in winter.
East African birds breed mainly on mountain lakes.
Behaviour
Breeding
Breeds April-September in Europe, throughout the year in Africa, and November-January in Australia.
Courtship display is lengthy, elaborate and involves paired dancing and ritualised gift-giving of bits of plant matter.
Nest is a heap of vegetation in reedbeds, sometimes anchored to emergent plants or on the bottom in shallow water.
Eggs: 4 (sometimes 3-6), white initially soon becoming stained (55 x 37mm, in Australia 50 x 35mm). Incubated by both sexes for 25-26 days. Young tended by both sexes, independent at 42 days but may remain with parents for up to 72 days. Single- or double-brooded.
Diet
Fish and aquatic insects and their larvae, crustaceans and molluscs caught in 30 second dives.
Vocalisation
A range of barking, trumpeting, wailing and growling calls
Gallery
Click on image to see full size
Adult carrying young on its back
Photo © by dandsblair
Leighton Moss, Lancashire, June 2013
Immature
Photo © by Florian Andronache
Romania
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved February 2016)
Recommended Citation
- BirdForum Opus contributors. (2024) Great Crested Grebe. In: BirdForum, the forum for wild birds and birding. Retrieved 19 April 2024 from https://www.birdforum.net/opus/Great_Crested_Grebe
External Links
GSearch checked for 2020 platform.1
