They rode on, Jack and Nat in advance. Whether their horses were better than the steeds of their companions, or whether Jack and Nat unconsciously urged them to greater speed, was not apparent, but the fact was that in about an hour the two found themselves alone, having distanced their companions.

“Let’s wait for them,” suggested Nat.

“No, let’s keep on. It’s a good trail, and they can’t miss it. They’ll catch up to us soon. Maybe we can see something to shoot if we go on a little way, or maybe——”

“Maybe we’ll see that mysterious bird,” finished Nat. “I believe you’d rather find that than kill a big buck.”

“Oh, I don’t know,” replied Jack slowly. “I’d like to get a nice buck, but I’d also like to solve that mystery.”

“Speaking of bucks,” whispered Nat quickly, “look there! Two of ’em!”

He pointed to a little glade, into which they were turning, and Jack saw two large mule deer feeding on the grass.

“A buck and a doe,” he said as he raised his rifle. “I think we are close enough to risk a shot. You take the buck, Nat. You haven’t had a good pair of horns yet, and that fellow has some beauts. We’ll both fire together.”

Nat nodded to show that he understood. The deer had not scented the young hunters, but were still quietly feeding. Slowly Jack and Nat raised their rifles, having dismounted from their horses.