Penguin Pooh

Fig. 1 Position of model penguin during defaecation and physical
parameters used to calculate rectal pressure necessary to expel
faecal material over a distance of 40 cm. From: Meyer-Rochow, V., & Gal, J. (2003). Pressures produced when penguins pooh?calculations on avian defaecation Polar Biology, 27 (1), 56-58 DOI: 10.1007/s00300-003-0563-3