If birds left tracks in the sky, what would they look like ... “In winter the starlings gather in large groups,” says Bou, who took this photo in the agrarian village of Arbeca, Spain.

The majority of the Laetoli footprint site ... trapping footprints. Birds and mammals left a great number of prints, but, spectacularly, so did a pair of hominids, one large and one small ...

Geologists recently discovered 3,000-year-old bird footprints in the sediment near the Allah Bund uplift in Kutch. This hints that the now arid region once had a water body. The findings suggest ...

"The large theropods would likely have fed on prey ... Before these tracks, the same team had also located bird tracks from the Early Cretaceous Period in the region. This is the oldest-known ...