This text comes from The Poetical Works of Robert Burns, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
In wood and wild, ye warbling throng,
Your heavy loss deplore;
Now half-extinct your powers of song,
Sweet Echo is no more.
Ye jarring, screeching things around,
Scream your discordant joys;
Now half your din of tuneless sound
With Echo silent lies.