File:Monopods on the canal - geograph.org.uk - 1524472.jpg
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| Description |
English: Monopods on the canal A common sight but why DO water birds stand on one leg? It can't be restful! The answer is heat conservation: such birds possess an adaptation called a "rete mirabilis" a complex web of arteries and veins which in their case acts as a heat exchange mechanism: the arteries that transport warm blood into the legs lie in contact with the veins that return colder blood to the birds heart. The arteries warm the veins. By standing on one leg, a bird reduces by half the amount of heat lost through unfeathered limbs and webbed feet. |
| Date | |
| Source | From geograph.org.uk |
| Author | ceridwen |
| Attribution (required by the license) | ceridwen / Monopods on the canal / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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_heading:270.00&language=en){kind=link}
| Object location | | View this and other nearby images on: OpenStreetMap | |
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by ceridwen and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: ceridwen
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 03:44, 3 March 2011 | | 640 × 480 (100 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Monopods on the canal A common sight but why DO water birds stand on one leg? It can't be restful! The answer is heat conservation: such birds possess an adaptation called a "rete mirabilis" a comp |
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