234
Fig. 3. This figure presents photographed examples of (a) high tension (HT), (b) low ten-
sion, (LT), and (c) search (S) behaviours of the Guinea fowl. Alongside each photograph
is a diagram to show (a) extended legs, vertically extended neck, potential head move-
ment; (b) relaxed (bent legs, withdrawn neck, potential head and neck movement; (c)
bent legs, horizontally extended neck, potential neck movement. The grid pattern on the
rear wall of the test chamber that assisted judgment of tension behaviours is also shown.