Boon Leong’s (a.k.a. wokoti) study of the White-throated Kingfisher (Halcyon smyrnensis) shows the left eye closed (above left). As typical of birds, the lower eyelid moves up to cover the eye. The open eye is shown on the right.
This is a rare image showing the eye closed and the whitish eyelid contrasting sharply with the dark chestnut head area. Check out the eye movements of the Buffy Fish Owl HERE.
This post is a cooperative effort between NaturePixels.org and BESG to bring the study of bird behaviour through photography to a wider audience.