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Dr. Ludwig Siefert and senior research assistant James Kalyewa use a wide range of monitoring techniques to track the movement of large predators in Uganda.

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Tree-climbing is an unusual behavior for lions, but the pride in Ishasha in Queen Elizabeth National Park, Uganda is famous for napping in trees during the day — this male is just waking up at dusk.

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A lion feeds on a cow carcass in Queen Elizabeth National Park.

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An infrared remote camera captures a male lion near a hyena den.

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A remote camera captures a leopard and a cape buffalo carcass.

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An infrared camera captures spotted hyenas on their dirt pad.

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An infrared camera captures a spotted hyena on its dirt pad.

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Workers sweep up lake flies that swarmed the lodge and died.

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A road divides where cattle have overgrazed the landscape.

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An infrared remote camera captures a male lion near a hyena den.

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Banded gold tips (Teracolus eris ssp. eris), African capers (Belenois creona), and false dotted border butterflies (Belenois thysa) turn elephant dung into something special on the road into Queen Elizabeth National Park, Uganda.

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A vervet monkey with her baby in Queen Elizabeth National Park.

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An infrared camera captures a spotted hyena on its dirt pad.

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A cave with thousands of Egyptian fruit bats in the Maramagambo Forest in Africa.

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A vervet monkey with her baby steals fruit at a lodge.

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A lion feeds on a cow carcass in Queen Elizabeth National Park.

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Oil exploration facility inside Murchison Falls National Park.

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A lion feeds on a cow carcass in Queen Elizabeth National Park.

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A local boy carries a bucket of Nile perch caught in Lake Albert.

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Herders graze their stock illegally in Queen Elizabeth National Park.

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Locals catch Nile perch and carry water from Lake Albert.

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Locals dry carpenter fish in the sun to sell as animal feed.

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Locals carry bucket loads of tiny carpenter fish from Lake Albert.

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Experts check for the signals of radio collared lions.

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A crew tranquilizes and radio collars a lion for monitoring.

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A crew tranquilizes and radio collars a lion for monitoring.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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