And to listen to the wind as it swept backwards and forwards over the surface of the earth below was another pleasure; for everything it touched gave out a definite note. He soon got to know the long sad cry from the willows, and the little whispering in the tops of the poplar trees; the crisp, silvery rattle of the birches, and the deep roar from oaks and beech woods. The sound of a forest was like the shouting of the sea.
But far more lovely, when they descended a little, and the wind was more gentle, were the low pipings among the reeds and the little wayward murmurs under the hedgerows.
The pine trees, however, drew them most, with their weird voices, now far away, now near, rising upwards with a wind of sighs.
There was a grove of these trees that trooped down to the waters of a little lake in the hills, and to this spot they often flew when the wind was low and the music likely, therefore, to be to their taste. For, even when there was no perceptible wind, these trees seemed always full of mysterious, mournful whisperings; their branches held soft music that never quite died away, even when all other trees were silent and motionless.
Besides these special expeditions, they flew everywhere and anywhere. They visited the birds in their nests in lofty trees, and exchanged the time of night with wise-eyed owls staring out upon them from the ivy. They hovered up the face of great cliffs, and passed the hawks asleep on perilous ledges; skimmed over lonely marshes, frightening the water-birds paddling in and out among the reeds. They followed the windings of streams, singing among the meadows, and flew along the wet sands as they watched the moon rise out of the sea.
These flights were unadulterated pleasure, and Jimbo thought he could never have enough of them.
He soon began to notice, too, that the trees emanated something that affected his own condition. When he sat in their branches this was very noticeable. Currents of force passed from them into himself. And even when he flew over their crests he was aware that some woods exhaled vigorous, life-giving forces, while others tired and depleted him. Nothing was visible actually, but fine waves seemed to beat up against his eyes and thoughts, making him stronger or weaker, happy or melancholy, full of hope and courage, or listless and indifferent.
These emanations of the trees—this giving-forth of their own personal forces—were, of course, very varied in strength and character. Oaks and pines were the best combination, he found, before the stress of a long flight, the former giving him steadiness, and the latter steely endurance and the power to steer in sinuous, swift curves, without taking thought or trouble.
Other trees gave other powers. All gave something. It was impossible to sit among their branches without absorbing some of the subtle and exhilarating tree-life. He soon learned how to gather it all into himself, and turn it to account in his own being.