UN Report: Migratory Species Facing Extinction

FILE - A volunteer carries a Green Sea Turtle after it was caught temporarily at a feeding site on Itaipu Beach in Niteroi, Brazil, May 24, 2023. Nearly half of the world's migratory species are in decline, according to a new UN report, Feb. 12, 2024. FILE - A researcher uses a clothes hanger to secure a geo-locator in place on the leg of a Red Knot shore bird while the glue dries on the north end of Nauset Beach in Eastham, Mass., Sept. 17, 2013.

Billions of species make migratory journeys every year. They travel by land, the oceans, the sky. Their journeys are legend. Children learn about them in schools. Some people are lucky enough to witness portions of some of the extraordinary annual trips the animals take to feed and to breed.