Bird migration is changing. What does this reveal about our planet? – visualised

Bird migrations rank as one of nature's greatest spectacles. Thanks to GPS tracking, scientists are uncovering extraordinary insights into ancient and mysterious journeys - and new threats that are reshaping them.

Bird migrations rank as one of nature's greatest spectacles. Thanks to GPS tracking, scientists are uncovering extraordinary insights into ancient and mysterious journeys - and new threats that are reshaping them.

As storm-chasing seabirds, Desertas petrels seek out hurricanes that draw deep-sea creatures to the surface. Only about 200 pairs remain, although the population is stable.