Despite being a better hunter than the Californian Condor, it still was inferior as a predator to smaller birds of prey, and the higher population density and wider range of the condor probably ensured that it survived while Merriam's teratorn didn't.
Despite being a better hunter than the Californian Condor, it still was inferior as a predator of small prey to hawks and even eagles. The higher population density and wider range of the condor probably ensured that it survived while Merriam's Teratorn didn't.