Figure 2. Head positions of the magpies.

Illustration of the various head positions recorded. (A) Horizontal scanning, (B) head held horizontally, (C) looking down in this case with no preferred eye, (D) looking up with slight head tilt to look overhead, in this case, with the right eye, (E) looking up without a preferred eye. Note that, although not the case in two of these photographs, all tests were conducted when the magpies were on the ground.