Micro‐CT image of the whole head of an adult gentoo penguin (Pygoscelis papua, G1) showing a dorsal ‘+’ element at 12 o'clock. The area between the postorbital process and the jugal bone contains the thick musculus adductor mandibulae externus, whose bulk would protect the globe in that area. The part of the globe least protected by the bony orbit can be seen to be the dorsal and temporo‐dorsal area, where the ring was thickest. Length of head imaged = 80 mm