Aug 31, 2015
Ancient Peru Tar Pools Trapped Hundreds of Songbirds
A dusty, windy desert in extreme northwestern Peru was once a grassland, replete with hundreds of songbirds. But this grassland, which may have been dotted with seasonal dry forests, was also a trap. Tar seeps bubbling up from the oil-rich ground snared animals, including saber-toothed cats, dire wolves and jaguars....