File:The Lone Blue Widebeest (Gnu), Amboseli National Park (45214862525).jpg
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Summary
[edit]DescriptionThe Lone Blue Widebeest (Gnu), Amboseli National Park (45214862525).jpg |
Wildebeests, also called gnus, are antelopes in the genus Connochaetes. They belong to the family Bovidae, which includes antelopes, cattle, goats, sheep, and other even-toed horned ungulates. Connochaetes includes two species, both native to Africa: the black wildebeest or white-tailed gnu (C. gnou), and the blue wildebeest or brindled gnu (C. taurinus). Fossil records suggest these two species diverged about one million years ago, resulting in a northern and a southern species. The blue wildebeest remained in its original range and changed very little from the ancestral species, while the black wildebeest changed more in order to adapt to its open grassland habitat in the south. The most obvious way of telling the two species apart are the differences in their colouring and in the way their horns are oriented. In East Africa, the blue wildebeest is the most abundant big-game species; some populations perform an annual migration to new grazing grounds, but the black wildebeest is merely nomadic. Breeding in both takes place over a short period of time at the end of the rainy season and the calves are soon active and are able to move with the herd, a fact necessary for their survival. Nevertheless, some fall prey to large carnivores, especially the spotted hyena. Wildebeest often graze in mixed herds with zebra which gives heightened awareness of potential predators. They are also alert to the warning signals emitted by other animals such as baboons. Wildebeest are a tourist attraction but compete with domesticated livestock for pasture and are sometimes blamed by farmers for transferring diseases and parasites to their cattle. Some illegal hunting goes on but the population trend is fairly stable and some populations are in national parks or on private land. The International Union for Conservation of Nature lists both as least-concern species. <a href="https://en.wikipedia.org/wiki/Wildebeest" rel="noreferrer nofollow">en.wikipedia.org/wiki/Wildebeest</a> |
Date | |
Source | The Lone Blue Widebeest (Gnu), Amboseli National Park |
Author | Ray in Manila |
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This image was originally posted to Flickr by Ray in Manila at https://flickr.com/photos/21186555@N07/45214862525. It was reviewed on 6 August 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 August 2019
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current | 09:04, 6 August 2019 | 3,692 × 2,461 (3.35 MB) | Rudolphous (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 650D |
Exposure time | 1/320 sec (0.003125) |
F-number | f/13 |
ISO speed rating | 400 |
Date and time of data generation | 17:25, 7 July 2018 |
Lens focal length | 55 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Lightroom Classic 7.3.1 (Macintosh) |
File change date and time | 16:20, 30 November 2018 |
Exposure Program | Shutter priority |
Exif version | 2.3 |
Date and time of digitizing | 17:25, 7 July 2018 |
APEX shutter speed | 8.321928 |
APEX aperture | 7.400879 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 38 |
Color space | sRGB |
Focal plane X resolution | 5,798.6577181208 |
Focal plane Y resolution | 5,788.9447236181 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Serial number of camera | 123013012048 |
Lens used | EF-S55-250mm f/4-5.6 IS II |
Rating (out of 5) | 4 |
Date metadata was last modified | 00:20, 1 December 2018 |
Unique ID of original document | 7DA283ADDC56E62165E1875A022486BA |
Keywords |
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IIM version | 4 |