Difference between revisions of "Template:POTD protected"

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'''[[Toney Mountain]]''' is an elongated [[snow]]-covered shield volcano, 60 km (38 mi) long and rising to 3,595 meters at Richmond Peak, located 56 km (35 mi) southwest of [[Kohler Range]] in [[Westarctica]].
The '''[[Brown Skua]]''' is a large seabird that breeds in the subantarctic and [[Antarctica|Antarctic]] zones and moves further north when not breeding.


Toney Mountain lies in a tectonically and volcanically active region of [[Antarctica]]. There, a layer of basaltic rocks up to 5 kilometers (3.1 mi) thick underlie a series of felsic volcanic edifices. These basaltic rocks in turn are emplaced above a Paleozoic basement with granite intrusions of Devonian-Cretaceous, which crops out in some mountain ranges. Beneath Toney Mountain, the basaltic floor rises from an elevation of 3 kilometers (1.9 mi) beneath sea level, and the volcano is situated on the floor of a graben. The region is further characterized by a 500 by 1,200 kilometers (310 mi × 750 mi) large dome-like uplift, part of the West Antarctic Rift, and it may reflect the presence of a stationary hotspot.
Brown skuas are masters of piracy, they often feed by stealing partially digested fish from the the beaks of other birds. Their victims are typically terns or [[penguin]]s, though other fish-eating species are also pursued until they disgorge their catches. The fact that skuas are swift and agile fliers (and that they sometimes gang up on a single victim) aid in their success rate. This is the heaviest species of skua and rivals even the largest gulls as the heaviest species in the shorebird order although not as large in length or wingspan.  


 
<p><small>Photographer: Jenny Varley</small></p>
<p><small>Photo by: Nicolas Bayou, UNAVCO</small></p>
[[:Category:Images|'''(More Images)''']]
[[:Category:Images|'''(More Featured Images)''']]
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Latest revision as of 14:07, 16 April 2024

Brown Suka eating chick.jpg

The Brown Skua is a large seabird that breeds in the subantarctic and Antarctic zones and moves further north when not breeding.

Brown skuas are masters of piracy, they often feed by stealing partially digested fish from the the beaks of other birds. Their victims are typically terns or penguins, though other fish-eating species are also pursued until they disgorge their catches. The fact that skuas are swift and agile fliers (and that they sometimes gang up on a single victim) aid in their success rate. This is the heaviest species of skua and rivals even the largest gulls as the heaviest species in the shorebird order although not as large in length or wingspan.

Photographer: Jenny Varley

(More Images)