Birks Fell is a Hewitt of 610.4 m in North Yorkshire. It clears the 2,000 ft line (609.6 m) by only 0.8 m.
All four of its nearest neighbours are higher, up to Great Whernside at 704 m. Of the 9 register hills in North Yorkshire, it has the smallest drop. On the Hewitts height ladder it sits between Foel Goch (611 m) and Corcogemore (610.1 m).