Vocal Range in Songbirds
Streaming Audio

Listen: 

The vocal range of the brown-headed cowbird exceeds that of human singers Ella Fitzgerald and Bobby McFerrin. Slowing the cowbird's song reveals its wonderful complexity.

The brown-headed cowbird's song can be found on the CD collection Bird Songs of California produced by the Cornell Laboratory of Ornithology.
I slowed the song down by 4 times using Bias Peak.