Diagram of bird from J. Maclair Boraston (1909) British Birds and their Eggs. London: W&R Chambers, page x.

Published Friday 20th December 2013 at 550 × 373 in Diagram of bird from J. Maclair Boraston (1909) British Birds and their Eggs. London: W&R Chambers, page x.
Diagram of bird from J. Maclair Boraston (1909) British Birds and their Eggs. London: W&R Chambers, page x.

Diagram of generic bird taken from J. Maclair Boraston (1909) British Birds and their Eggs. London: W&R Chambers, page x. Click on the image to see a larger version.

Diagram of bird from J. Maclair Boraston (1909) British Birds and their Eggs. London: W&R Chambers, page x.