Riders on the what?

I have a locational song for Yellface.

There's a kitten on the bed.
There's a kitten on the bed,
Please pet her silly head,
This kitten on the bed.

There's a kitten on the sill.
There's a kitten on the sill,
So please don't speak her ill,
This kitten on the sill.

There's a kitten on the couch.
There's a kitten on the couch,
She just might be a grouch,
This kitten on the couch.