Name the show - "It's an injustice, it is."

It was a kid’s show that was on in the 70’s.

A cartoon featuring a little bird who wore half his shell as a hat.

A neighbour kid was always doing horrid things and causing him to be blamed.

The end was virtually always the little bird saying, “It’s an injustice, it is.” in a breathy, pathetic little voice.

Even as a kid it struck me as being a weird message to give kids, since the little bird always lost out and accepted his punishment with no more than that catchphrase.
What was it called?

Calimero

That’s it. Thanks very much.