When I saw "The Mallard", I was expecting this song, which is also in the Mudcat archives. (Why can I not make a blue clicky to the lyrics?)

Fiddle/mandolin/guitar player Joe Weed has an album called "Waltz of the Whippoorwill", with 11 tunes he wrote that incorporate motifs from actual birdsongs. It's cool.

Repülj madár, repülj (Fly Bird, fly) is by the Hungarian band Muzsikás. Lyrics and translation at the link.

Did anyone mention "Leather-wing bat" yet? No, a bat is not a bird, but there are lots of birds in the lyrics.

Bert Jansch's Bird Song is a nice one. Lyrics here.

Johnsmith, who lives in Wisconsin and smushes his first and last name together, has a song called Jaybird.

John Smith, who is from England and keeps his names separated, sings Hummingbird, but now that I listen to it all the way through, I realize that the bird in question is a metaphor. Or is it a simile?

There's always Joni Mitchell's "Song to a Seagull".

My clicky-making muscles are getting tired.