Науковці виявили що птахи оксбекери допомагають жирафам від паразитів

Is this not a face of relaxed contentment? Maybe the small bird on the giraffe's ear, - the Oxpecker - could be part of the reason why.....
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A study has suggested that the red-billed Oxpecker bird, often found eating the bugs and insects from the backs of big game animals such as Rhino, Giraffe and Buffalo, actually alerts their host to approaching humans, long before the large mammal would realise alone.
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Scientists speculate that the African bird has evolved this reaction to protect their food supply. While an adult Rhino has no natural predators in the wild, Giraffe and Buffalo certainly do. The Oxpecker’s now see humans as the same threat to a Rhino as they do a Lion to a Giraffe or Buffalo.

National Geographic