Migrating barnacle geese that lay their eggs in the Arctic zones of northern Russia are becoming confounded by earlier springs in their traditional nesting grounds, according to a study published in Current Biology. The rising temperatures in the Arctic circles caused by global warming are threatening the survival of this species, which travels more than 3,000 km, or 1,800 miles, to reach their nesting territory. The research, released in May 2018, noted that the geese habitually make the month-long journey from parts of northern Germany and the Netherlands based on a biologically coordinated schedule now jeopardized by human activity.