I'm teaching English and want to sing this song to my senior pupils. I was astounded to find this page. Here's the Text I know - (for some reason Petulia Clark comes to mund) It was definitely a woman.

Early in the morning,
while I'm still asleep
comes a little chirping
comes a little tweet
From a tiny birdie with a funny name
It's a kleine kleine fliegel flügel orkaweckene biegel bugel eargensplitten luden bumer bird
He wakes me in the middle or my dreaming dreaming of the one I love. Richt in the middle of my kissing - kissing the one that I am dreaming of.
Going to put some bird-seed. On my windowsill, just to stop his chirping just to stop his trill. Though I love this birdie with the funny name He's a --------kleine kleine fliegel flügel ......

This may not be perfect ....