"Yes," exclaimed Elephant; "I used to think that little Bug was the limit; but now I see I was away off. This biplane has got her number, all right. Why, there ain't anything you couldn't trust her to do, fellows."

"W-w-with F-f-frank at the h-h-helm, you m-m-mean!" spluttered Nat.

"Oh! that goes without saying, Nat," declared Elephant.

"We was wondering whether you had another scrap with the two pirates up there?" remarked Larry, pointing toward Old Thunder Top.

"No, the eagles have become used to seeing an aeroplane by now. They came close to watch us, because they've got eaglets in the nest; but never once swooped down to strike at us with talons, wings or beaks," Frank replied.

"We're going to tame 'em so's to shake hands with us," grinned Andy.

"I was watching you through the old telescope Andy has here," observed Larry; "and which he says one of his ancestors used when he was captain of a sailing vessel more'n eighty years ago. She worked fine too, though a bit clumsy. And Frank, what under the sun did you make that sudden upward slant for, when you was away off over the Powell woods? Whew! I thought you'd sure go clean over backwards!"

The Bird boys exchanged glances, which of course aroused the curiosity of the observing Larry more than ever.

"Here, none of that, now, fellows," he remarked. "There's something in the wind, and you've just got to tell us all about it. Did the lever break or get away from your grip, Frank? There was a reason for that jump, and I know it."

"Sure there was," said Andy. "If you heard a gun go bang a few hundred feet below, and then got the zip-zip of the bullet as it whipped past not five feet from your ears, perhaps you'd move the ascending lever some too, and take chances on getting out of that dangerous spot in a big hurry, eh?"