He is the sole lord of that region.

Therefore, unlike most other creatures, these birds have a retreat where no enemy can come near them, and where they may bring forth their young, and rear them in perfect security.

Still more, they can go to rest at night without fear of being disturbed, unless by the crash of the falling avalanche, or the roar of the loud thunder that often reverberates through these Alpine regions.

But the condor is not in the least afraid of these noises; and he heeds them not, but sleeps securely, even while the red lightning is playing around his eyrie.
"Now, it is very evident that birds, or any other wild animals, possessing a secure place, both to bring forth their young or escape to in time of danger, will not easily be extirpated.

It is because their places of breeding and retreat are accessible--not only to man but to hosts of other enemies--that such creatures as eagles and the like are so scarce.