Abstract: This book is devoted to Penguin Communication and based on the work done by S Dobson in the TAAF including with the program 119 Econergy. Chapter 3 is largely based on the following paper:

Schull Q., Dobson F. S., Stier A., Robin J. P., Bize P. et V. A. Viblanc (2016) Beak color dynamically signals changes in fasting status and parasite loads in king penguins Behav. Ecol. 27: 1684-1693. doi:10.1093/beheco/arw091