Trying to find the name of a children's book?

There was a book from my youth - so, no later publish date than maybe 1985, but I remember it as being much older than that - probably published in the late 60s.

I don't remember the story - but it was illustrated, and relatively thin and a large format book - so not one of the smaller Dr. Suess size sort of children's books. It was hard cover.

A particular illustration that I remember was that it was night, in a forest, and there was a particular kind of creature like a bird but had something funny with it's feet - maybe wheels instead of feet, (but I might be confusing that with Ozma of Oz) the image on the page was mostly black with the creature in some bright colors on a tree branch.

The illustration was sort of cartoonish, not realistic.

I realize this isn't much to go on - but I've not found it yet in many years of searching so I thought I might throw the net a bit wider.

Thanks for your help.