24 September 2014 Last updated at 12:18
By Jonathan WebbScience reporter, BBC News
"Restaurants" of dead meat set up for endangered vultures also attract an undesirable clientele of hyenas and jackals, according to a six-year study.
The research consisted of repeated "scat surveys" (dung counts) at two nearby sites in South Africa.
There was a surge in numbers of both the cheeky mammals, specifically at the site with extra food, which went back down again when the restaurants closed.
The birds have been in decline worldwide for a number of reasons.
Specifically, the researchers suggest using fences to exclude the unwanted, earthbound customers, and dishing up the extra meat for the vultures in random locations instead of re-stocking a regular carrion pantry.
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