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Hoary-headed Grebe

From Opus

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Line 1: Line 1:
-;Poliocephalus poliocephalus+;[[:Category:Poliocephalus|Poliocephalus]] poliocephalus
-[[Image:Hoary-headed_Grebe.jpg|thumb|550px|right|Photo by Tom Tarrant]]+[[Image:Hoary-headed_Grebe.jpg|thumb|550px|right|Photo by {{user|Tom+Tarrant|Tom Tarrant}}]]
==Identification== ==Identification==
-Adult breeding: brownish-grey above and whitish below with grey upper breast and brownish-grey flanks. Forehead grey-brown darkening towards black hindcrown and nape with whitish streaks over head and cheeks giving a hoary appearance, chin black. Iris usually pale yellowish-white, bill black with white tip, legs olive-green. Adult non-breeding: generally duller and greyer, streaking on head much reduced but dark cap retained. Juvenile: as non-breeding adult but with indistinctly striped face. Flight: broad white trailing edge to secondaries on upperwing which continues across most of the primaries. Length 29-31cm.+L. 29-31cm
 +====Adult Breeding====
 +*Brownish-grey above
 +*Whitish below
 +*Grey upper breast
 +*Brownish-grey flanks
 +*Grey-brown forehead darkening towards black hindcrown and nape
 +*Whitish streaks over head and cheeks give hoary appearance
 +*Black chin
 +*Usually pale yellowish-white iris
 +*Black bill with white tip
 +*Olive-green legs
 + 
 +====Adult Non-breeding====
 +G-enerally duller and greyer, streaking on head much reduced but dark cap retained
 +====Juvenile====
 +Similar to non-breeding adult but with indistinctly striped face.
 +===Flight===
 +Broad white trailing edge to secondaries on upperwing which continues across most of the primaries.
==Distribution== ==Distribution==
-Southern half of [[Australia]] and [[Tasmania]]. +Southern half of [[Australia]] and Tasmania.
==Taxonomy== ==Taxonomy==
 +This is a monotypic species.<sup>[[#References|[1]]]</sup>
 +
==Habitat== ==Habitat==
Lakes, reservoirs and large swamps. Lakes, reservoirs and large swamps.
==Behaviour== ==Behaviour==
 +====Breeding====
Breeds November-January or after rains. Nest is a floating heap of vegetation Eggs: 3-6, greenish-white to pale blue initially. Breeds November-January or after rains. Nest is a floating heap of vegetation Eggs: 3-6, greenish-white to pale blue initially.
 +====Diet====
 +Includes small fish and aquatic invertebrates.
 +
 +==References==
 +# Clements, James F. 2007. ''The Clements Checklist of Birds of the World''. 6th ed., with updates to October 2007. Ithaca: Cornell University Press. ISBN 9780801445019
-Diet includes small fish and aquatic invertebrates. 
==External Links== ==External Links==
-*[http://www.aviceda.org/abid/birdimages.php?action=birdspecies&fid=44&bid=607 View more images of this species on the ABID]+{{GSearch|Hoary-headed+Grebe}}
-[[Category:Birds]] [[Category:Incomplete]]+[[Category:Birds]] [[Category:Poliocephalus]]

Current revision

Poliocephalus poliocephalus
Photo by Tom Tarrant
Photo by Tom Tarrant

Contents

[edit] Identification

L. 29-31cm

[edit] Adult Breeding

  • Brownish-grey above
  • Whitish below
  • Grey upper breast
  • Brownish-grey flanks
  • Grey-brown forehead darkening towards black hindcrown and nape
  • Whitish streaks over head and cheeks give hoary appearance
  • Black chin
  • Usually pale yellowish-white iris
  • Black bill with white tip
  • Olive-green legs

[edit] Adult Non-breeding

G-enerally duller and greyer, streaking on head much reduced but dark cap retained

[edit] Juvenile

Similar to non-breeding adult but with indistinctly striped face.

[edit] Flight

Broad white trailing edge to secondaries on upperwing which continues across most of the primaries.

[edit] Distribution

Southern half of Australia and Tasmania.

[edit] Taxonomy

This is a monotypic species.[1]

[edit] Habitat

Lakes, reservoirs and large swamps.

[edit] Behaviour

[edit] Breeding

Breeds November-January or after rains. Nest is a floating heap of vegetation Eggs: 3-6, greenish-white to pale blue initially.

[edit] Diet

Includes small fish and aquatic invertebrates.

[edit] References

  1. Clements, James F. 2007. The Clements Checklist of Birds of the World. 6th ed., with updates to October 2007. Ithaca: Cornell University Press. ISBN 9780801445019

[edit] External Links

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