It's a Mystery, Charlie Brown

This special begins with an extended Woodstock sequence in which the little birdy builds a massive nest to cope with the weather. But the nest is soon stolen and he teams up with Snoopy (in his Sherlock Holmes guise) to track down his missing home and find the culprit.

There's not a lot of dialogue in this one as it focuses on Snoopy and Woody more than the human members of the peanuts gang. The dog and the bird visit them all one by one, giving them each a minute and a half of screen time, but it's just not all that mysterious. I would have preferred if it were a mystery that ol' Chuck could solve. Still, it's quite funny and worth a watch.