Wild birds are everywhere, from the dry deserts to the icy poles.

We see them soaring overhead, paddling across water, flitting through trees, pecking at the ground or our backyard bird feeders and singing from fence posts. Birds contribute to the health of the planet and provide pleasure for millions of people, but wild birds are in trouble. Today, almost 200 bird species are critically endangered. They are threatened by habitat loss, invasive species, climate change, pesticides, plastics in the environment, human-made structures and other animals. Bird's-Eye View looks at why wild birds are important, why they need help and what young people all over the world are doing and can do to give wild birds a boost.