Status Updates From The Untamed (Dan Barry, #1)

"That stallion would be willin'
to lay right down and die for the man that's jest rode him up to the front door of death, but he wishes everlastingly that he had the strength to kick the daylight out of you an' me that's been tryin' to take care of him. You jest write this down inside your brain, Buck: a hoss is like a woman.
They jest nacherally ain't no reason in
'em!"

He began to whistle, a low, melancholy strain so soft that it blended with the growing hush of the night.
Calder listened, wholly overawed. That weird music seemed an interpretation of the vast spaces of the mountains, of the pitiless desert, of the limitless silences, and the whistler was an understanding part of the whole.

Written as Weird West (if that term existed at the time) or Supernatural. But 'Whistling Dan' Barry "ain’t normal." Good story, though

p.21/329. Chapter III. Silent Shoots

3. Silent Shoots

2. The Panther

1. Pan of the Desert