Video: Photographing the Wolves of Yellowstone National Park

The May issue of National Geographic magazine is dedicated completely to the world's first national park – Yellowstone. When preparing to release the issue Nat Geo sent a team of photographers to the park to capture the landscapes and wildlife that exist there. Amongst them was Ronan Donovan who was charged with shooting photos of the wolves that live there. In this video, he talks about the challenges and rewards of that assignment, which was unlike any other he'd had before.