The hoary-headed grebe (Poliocephalus poliocephalus) is a member of the grebe family. It breeds in southern parts of Australia; it winters throughout the island of Tasmania. The bird takes its name from the silvery-white streaking on its black head. It is common in Australia, with a population of about 500,000. Its habitat is similar to that of the Australasian grebe.
The hoary-headed grebe is a fairly small dark grey and white grebe. It has a brown eye and a black patch under the chin, and a narrow black streak down the back of the neck. During the breeding season the adult's plumage has white streaks over its entire head, giving them the common name of hoary-headed grebe. Juveniles have a white chin and throat and a striped face.[2] Males have two plumage phases: after breeding they lose the buff breast and the white lines on the head, but can usually be identified then by the broad black bar down the nape.[3]
The hoary-headed grebe is found in all states and territories of Australia. It is generally absent from the central arid regions of Australia.[4] The hoary-headed grebe is usually found away from the shoreline in large open waters, which may be estuarine, brackish or freshwater.[5] It can also be found in sheltered coastal seas.[6] It can sometimes be found in New Zealand, where it is much less common than Australia.[7]
The hoary-headed grebe feeds on aquatic arthropods, mostly caught by deep diving. This species feeds during the day, and when the light is poor, forages mostly at the water surface.[8]
Hoary-headed grebes breed from August to January. The nests are a floating platform of water weeds, similar to that of the Australasian grebe, and usually some distance out from shore among sparse reeds or other plants, anchored to and at least partly supported by them. A shallow depression on top is just slightly above water, so the eggs are lying in water or dampness. The eggs are concealed under pieces of wet vegetation when the incubating parent leaves so that the nest appears empty. Under full sun the covered eggs are warm and moist, often left unattended for some time. The egg's appearance is oval, white, and soon stained brownish ochre, while the clutch is usually 2–5 eggs. Incubation is 20–24 days and egg size is 39 x 27 mm.[9]
With a large range and no evidence of significant population decline, this species’ conservation status is of Least Concern.
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This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: X-Tinction Agenda – news · newspapers · books · scholar · JSTOR (October 2018) (Learn how and when to remove this template messa…
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2020 in music By location Africa Asia Canada China Europe United Kingdom Japan Philippines South Korea United States By genre classical country heavy metal hip hop jazz Latin rock By topic List of albums released Overview of the events of 2020 in Philippine music List of years in Philippine music … 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 … Art Archaeology Architecture Literature Music Philosophy Science +... The following is a …
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Ayumi Hamasaki Dome Tour 2001 A – news · newspapers · books · scholar · JSTOR (December 2009) (Learn how and when to remove this template message) 2001 video by Ayumi HamasakiAyumi Hamasaki Dome Tour 2001 AVideo by Ayumi HamasakiReleasedDecember 12, 2001Ge…
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