...Cathartidae, Condor, Turkey (American, New World)Vultures, 9 sp... 
John Albert Leach 「An Australian Bird Book」
...The Condor, VII, pp...
Frank M. Chapman 「Color Key to North American Birds」
...The Condor,X, pp...
Frank M. Chapman 「Color Key to North American Birds」
...The Condor, XIV, pp...
Frank M. Chapman 「Color Key to North American Birds」
...The Condor, X, pp...
Frank M. Chapman 「Color Key to North American Birds」
...The American Condor is the largest of thebirds of prey, and is said to partake of the ferocity of theEagle and the filthiness of the Vulture...
Various 「Natural History in Anecdote」
...The mostnumerous fliers are little insects, and the rising series stops withthe condor, which, though having much less weight than a man, is saidto fly with difficulty when gorged with food...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
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