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Grey Plover

From Opus

Alternative name: Black-bellied Plover

Winter plumaged birdPhoto by mjmw Sanibel Island, Florida, USA, December 2005
Winter plumaged bird
Photo by mjmw
Sanibel Island, Florida, USA, December 2005
Pluvialis squatarola

Contents

[edit] Identification

Breeding plumaged birdPhoto by blubird Ft. De Soto Park, Florida, USA, April 2009
Breeding plumaged bird
Photo by blubird
Ft. De Soto Park, Florida, USA, April 2009

27–31 cm(10½-12¼ in)
A large, compact Pluvialis plover with totally white undertail coverts. Shows black axillaries ("wingpits") in all plumages and a big, strong bill. Has a tiny hind toe which the other Pluvialis plovers lack.

In breeding plumage has upperside metallic bicoloured back with black and white spots, and front black from eyes down to between the legs; the black area is adjacent to a broad white band from forecrown to upper breast, but the black area disappears behind the wings by the lower breast. Males have slightly more extensive and solid black than females.

In winter plumage shows streaking on breast and less strongly patterned upperside, which is rather coldly coloured. The supercilium is quite prominent.

Juvenile has streaked breast and pale cap, and can show quite strongly yellowish colours.

In flight, the white uppertail coverts (appears as a "white rump"), barred tail, black axillaries ("armpits" or "wingpits") and bold white wing stripe are evident.

[edit] Similar Species

Early Autumn plumagePhoto by birdthingTitchwell Marsh, Norfolk, September 2017
Early Autumn plumage
Photo by birdthing
Titchwell Marsh, Norfolk, September 2017

The other Pluvialis species (the three golden plovers) are slightly smaller with smaller head, thinner bill, and have dark tail, a less obvious or no wing stripe, and white or grey, not black, axillaries.

[edit] Distribution

Breeds between 65°N and 75°N in the Arctic Tundra (north-eastern Europe, northern Asia and northern Canada). The non-breeding range includes almost all coastlines between 50°N and 40°S; also wintering north to 60°N in NW Europe.

[edit] Taxonomy

JuvenilePhoto by ScridiferPomorie Lake, Bulgaria, November 2016
Juvenile
Photo by Scridifer
Pomorie Lake, Bulgaria, November 2016

This is considered a monotypic species by some authors[1], while other authorities recognise three subspecies, nominate P. s. squatarola (Europe, Asia, Alaska), P. s. cynosurae (North America except Alaska; marginally smaller) and P. s. tomkovichi (Wrangel Island in north-eastern Asia; marginally larger)[3], [4].

In the past, the species was occasionally split from Pluvialis into its own genus Squatarola, but this is no longer accepted[2].

[edit] Habitat

Breeds in arctic tundra without trees, winters on muddy and sandy areas almost exclusively along coasts.

[edit] Behaviour

All Pluvialis plovers have a habit of occasionally lifting their wings straight up without actually flying off, which helps a lot with seeing the colour of the axillaries.

[edit] Diet

Their rather varied diet consists of insects, larvae and other invertebrates such as beetles. Also some plant material like grass seeds and stems.

[edit] Vocalisation


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[edit] Gallery

Click on photo for larger image

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Del Hoyo, J, A Elliot, and J Sargatal, eds. 1996. Handbook of the Birds of the World. Volume 3: Hoatzin to Auks. Barcelona: Lynx Edicions. ISBN 978-8487334207
  3. Gill, F and D Donsker (Eds). 2014. IOC World Bird Names (version 4.3). Available at http://www.worldbirdnames.org/.
  4. Cramp, S. (ed.) Birds of the Western Palearctic 3: 216-226 (1983).

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