HUMBOLDT-NATURE
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A new study from Dr Elbroch, in the Chacabuco Valley of southern Chile, shows that cougars in the Patagonia region made nearly 50% more kills and fed less on these kills than cougars living in other regions of the Americas. Doing so,  they provide three times the food to their local communities than do wolves in Yellowstone National Park.

It also shows how the condors would frequently be harassing cougars feeding on kills.
It is quite interesting to see how scavengers like the condor can influence predator-prey interactions.

For more info, you can read the article in Science.

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