This story appears in the January 2018 issue of National Geographic magazine. If birds left tracks in the sky, what would they look like? For years Barcelona-based photographer Xavi Bou has been ...

Other tracks found on the same surface were made by bird, bovid or equid creatures, the study said. The bird tracks were “unusually large,” with the largest exceeding 10 inches wide.

Before these tracks, the same team had also located bird tracks from the Early Cretaceous Period in the region. This is the oldest-known evidence of birds in the south. "We’re continuing to ...

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 ...

"Traces emplaced during this feeding would look like clusters of ovoid pits on the sediment surface and would not be associated with bird footprints. They would likely be misinterpreted in the ...