Biologists from the Peregrine Fund say the confirmed sighting brings the number of wild condor chicks produced by the Arizona-Utah flock this season to three.
The first two chicks were confirmed in May with one each at the Grand Canyon and Vermilion Cliffs National Monument.
Biologists say there now are 77 endangered condors in the wild in Arizona and Utah.
Eighteen chicks have hatched in the wild since condors were first reintroduced in Arizona in 1996.
The new chicks are expected to take their first flight from the nest in late fall.
The California condor population was once down to just 22 birds in the 1980s.