Threat Display, 2016
The book Threat Display shows collected photographs of guards according to terms of behaviour from the Handbook of the Birds of Europe, the Middle East and North Africa; Vol VII (Flycatchers to Shrikes) by S. Cramp and C.M. Perrins. In the chapter ‘Social pattern and behavior of the Great Grey Shrike (Lanius excubitor)’ the author uses the term Threat Display: a display behaviour common for birds involved in defense of territory, often resulting in the retreat of the threatened birds, so avoiding direct conflict. The Latin word excubitor is given to the Shrike by Linnaeus, meaning watchman, sentinel or guard. A guard is a person posted at a given spot to prevent the passage of unauthorized persons or defending a specific place. Threat Display offers a biological view on the postures of guards and places it in a behavioural context.