August is the month of the high-sailing hawks.  The hen-hawk is the most noticeable.  He likes the haze and calm of these long, warm days.  He is a bird of leisure, and seems always at his ease.  How beautiful and majestic are his movements!  So self-poised and easy, such an entire absence of haste, such a magnificent amplitude of circles and spirals, such a haughty, imperial grace, and, occasionally, such daring aerial evolutions!

With slow, leisurely movement, rarely vibrating his pinions, he mounts and mounts in an ascending spiral till he appears a mere speck against the summer sky; then, if the mood seizes him, with wings half closed, like a bent bow, he will cleave the air almost perpendicularly, as if intent on dashing himself to pieces against the earth; but on nearing the ground he suddenly mounts again on broad, expanded wing, as if rebounding upon the air, and sails leisurely away.  It is the sublimest feat of the season.  One holds his breath till he sees him rise again.

If inclined to a more gradual and less precipitous descent, he fixes his eye on some distant point in the earth beneath him, and thither bends his course.  He is still almost meteoric in his speed and boldness.  You see his path down the heavens, straight as a line; if near, you hear the rush of his wings; his shadow hurtles across the fields, and in an instant you see him quietly perched upon some low tree or decayed stub in a swamp or meadow, with reminiscences of frogs and mice stirring in his maw.

When the south wind blows, it is a study to see three or four of these air-kings at the head of the valley far up toward the mountain, balancing and oscillating upon the strong current; now quite stationary, except a slight tremulous motion like the poise of a rope-dancer, then rising and falling in long undulations, and seeming to resign themselves passively to the wind; or, again sailing high and level far above the mountain’s peak, no bluster and haste, but as stated, occasionally a terrible earnestness and speed.  Fire at one as he sails overhead and, unless wounded badly, he will not change his course or gait.

His flight is a perfect picture of repose in motion.  It strikes the eye as more surprising than the flight of a pigeon, and swallow even, in that the effort put forth is so uniform and delicate as to escape observation, giving to the movement an air of buoyancy and perpetuity, the effluence of power rather than the conscious application of it.

The calmness and dignity of this hawk, when attacked by crows or the kingbird, are well worth of him.  He seldom deigns to notice his noisy and furious antagonists, but deliberately wheels about in that aerial spiral, and mounts and mounts till his pursuers grow dizzy and return to earth again.  It is quite original, this mode of getting rid of an unworthy opponent, rising to the heights where the braggart is dazed and bewildered and loses his reckoning!  I am not sure but is is worthy of imitation.