Is Birks a Wainwright?

Yes. Birks is one of the 214 Wainwrights: number 3 of 35 in Book 1, The Eastern Fells, of Alfred Wainwright’s Pictorial Guide to the Lakeland Fells.

Where Birks stands

Birks among all 214 Wainwright summits, each in its true position.

Straight-line distances between summits.

Heights, grid references and summit positions come from The Database of British and Irish Hills v18.3, used under CC BY 4.0.