wakeful (adj.)
Now came still evening on, and twilight gray
Had in her sober livery all things clad;
Silence accompany'd; for beast and bird,
They to their grassy couch, these to their nests,
Were slunk, all but the wakeful nightingale;
She all night long her amorous descant sung;
Silence was pleas'd. Now glow'd the firmament
With living sapphires; Hesperus, that led
The starry host, rode brightest, till the moon,
Rising in clouded majesty, at length
Apparent queen unveil'd her peerless light,
And o'er the dark her silver mantle threw.