Jen Guyton / White-backed vultures (Gyps africanus) pick at an elephant carcass (Loxodonta africana) while a spotted hyena (Crocuta crocuta) looks on, Laikipia Plateau, Kenya. The hyena is tinted a reddish-brown f...

Jen Guyton / Spotted hyenas (Crocuta crocuta), Rüppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) at the carcass of an elephant (Loxodonta africana), as the night and day shifts...

Jen Guyton / Ayla Kaltenecker releases an African fish eagle (Haliaeetus vocifer) that was captured in a leg-hold trap to be studied by raptor biologists. The researchers took measurements and a blood sample befor...

Jen Guyton / White-headed vulture (Trigonoceps occipitalis) having measurements taken. Gorongosa National Park, Mozambique.

Jen Guyton / Biologist Eric Hallingstad carrying white-backed vulture (Gyps africanus) to the processing station, to fit it with a wing tag and GPS transmitter. Gorongosa National Park, Mozambique

Jen Guyton / Biologist Eric Hallingstad carrying white-backed vulture (Gyps africanus) to the processing station, to fit it with a wing tag and GPS transmitter. Gorongosa National Park, Mozambique

Jen Guyton / Young Mozambican biologist Diolinda Mundoza releasing a white-headed vulture (Trigonoceps occipitalis), Gorongosa National Park, Mozambique.

Jen Guyton / Young Mozambican biologist Diolinda Mundoza admires a young white-headed vulture (Trigonoceps occipitalis) as she prepares to release it. Gorongosa National Park, Mozambique.

Jen Guyton / Dr. Greg Kaltenecker carefully hands a white-headed vulture (Trigonoceps occipitalis) to Diolinda Mundoza, a young Mozambican scientist who is training with this research team to become an ornithologi...

Jen Guyton / Rüppell's griffon vulture (Gyps rueppelli) and spotted hyenas (Crocuta crocuta) pick at an elephant (Loxodonta africana) carcass at dawn, Laikipia Plateau, Kenya. This elephant was killed by governme...

Jen Guyton / Two spotted hyenas (Crocuta crocuta) standing in front of an elephant carcass at dawn, Laikipia Plateau, Kenya. This elephant was killed by government officials after it killed a man walking home late...

Jen Guyton / A spotted hyena (Crocuta crocuta) chases a flock of white-backed vultures (Gyps africanus) away from an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The hyenas are tinted a reddish...