lagoons

Over the last week, they have tracked the birds on a digital map crossing Mexico, headed for Andean lagoons in Ecuador and Bolivia.

At least five people were killed and two bodies were found in the lagoons north of central Lomé, though whether they had drowned while fleeing arrest or been deliberately killed was unclear.

"The lagoons here are smaller now," she says.

A variety of species, including avocets, oyster catchers and black-tailed godwits, probe the mud for food and nest on the land between lagoons and streams.

The scientists analysed the footprints to understand how the animals had moved, and suggested the different dinosaurs had "milled around" shallow freshwater lagoons.