IUCN / SSC Cat Specialist Group - Digital Cat Library |
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| FitzGibbon, C.D. | |
| A Cost to Individuals with Reduced Vigilance in Groups of Thomson's Gazelles Hunted by Cheetahs | |
| 1989 Animal Behaviour (37): 508 -510 | |
A number of studies have shown that prey animals tend to reduce the amount of time they spend vigilant when associated with conspecifics. The effects of individual vigilance levels on the vulnerability of Thomson's gazelles was investigated in the Serengeti National Park, Tanzania. Cheetahs are there the main predator of the Thomson's gazelle, killing approximately 8% of the adult population each year. |
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