HiTry http://www.kididdles.com/, it's a great site for kids songs.
From memory, (this was actually on "Play School" here this morning but I wasn't paying much attention.
There's a little white duck swimming in the water
A little white duck doing what he oughta
He took a (?bite?) of a lily pad
?(smiled to himself) and he said I'm glad that I'm a
Little white duck..........There's a little green frog....... (basically the same)
Slainte
Alison