Twit Twoodle

Continuing a theme of Carmi and new and wonderful animals.
This is the owl at Willow Farm, it doesn't actually say twit twoo. Some owls say twit, others say twoo (personally I'm more of a twoo kinda-owl person). And then others saw screech and some saw craw and some say ... well you get the idea.

The only problem is with the song.
Old Mac Carmi had a farm ey yi ey yi yo
And on that farm he had an owl ey yi ey yi yo
With a .... and then it all starts to go horrible wrong.

Toodle-oo Twit-twoo