![Tracks in the snow](/sites/default/files/styles/grid_teaser/public/2019-02/50936725_2017397931629183_2612937315521134592_o.jpg?h=309e12e8&itok=CpR_elQb)
Whose track is that?
Through snow, mud, sand or soil, animals (and humans) cannot hide their tracks or footprints. But how do we know what tracks we are looking at?
Through snow, mud, sand or soil, animals (and humans) cannot hide their tracks or footprints. But how do we know what tracks we are looking at?
Winter brings with it one of nature’s true spectacles: starling murmurations. But what are they, and why do these hypnotic gatherings form?