The enormous wingspan gave P. chilensis certain advantages, like the ability to travel long distances and reach areas of the open ocean thick with potential prey. The researchers think it feasted on fish and squid, and may have trolled its hunting grounds with its lower beak skimming the water until its teeth could clamp down on a wriggling meal. But lead researcher Gerald Mayr says that a 17-foot wingspan is probably close to the maximum for a flying bird.
The bird flew over South America between 10 and 5 million years ago, which means it may have been seen by our hominid ancestors. Link
Previously: Argentavis magnificens