Reader appeal

Anyone out there who speaks Japanese (I am pretty sure this is Japanese) - perhaps Tim or Stephen, if you're around - would you be interested in telling me what this says?

My mother got it some time ago from an aunt who traveled to Japan (if I remember correctly what this is) and I am curious as to what it says.  Inside the box that this is the label of is a small scroll.

Comments

[Aurelius]

Literally it says:
nation treasure bird animal play drawing scroll

Or,

Paintings of birds and animals playing together are a national treasure.

[Thomas]

Thanks for coming through, Aurelius!