Aiolornis

Aiolornis incredibilis (formerly Teratornis incredibilis), of the teratorn family, was the largest known North American flight-capable bird, with a wingspan of up to approximately 5 m (16 ft) and a huge, deep, powerful bill. The typical body mass of this bird was estimated to be 23 kg (51 lb), significantly heavier than any extant flying bird. A. incredibilis presumably became extinct at the same time as the other megafauna in North America. It is sometimes called the giant condor because...