In this group of Buffleheads, the one in front communicates quiet watchful alertness, while the two behind him could be sleeping for all I know.
Buffleheads
What feelings do you get about the birds on the left compared to the same birds on the right?
Bald Eagle
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Red breasted Sapsucker
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Perhaps it’s because we rely on our own eyes for so much information about the world that we pay so much attention to the eyes of other creatures. In human psychology there is a wealth of evidence about the importance of eyes in how we relate to others. Even tiny babies show preference for the faces of adults who are looking at them ( www.researchgate.net/… ). Folks with autism have great difficulty with social relationships and communication; and a defining characteristic for them is the inability to make eye contact with others. (www.autismspeaks.org/) Without eye contact they miss social cues, can’t pick up or share emotional states, and their averted gaze conveys disinterest to others. As a social species, making connections is so critical to us it actually diverts brain power from cognitive tasks (onlinelibrary.wiley.com/… ) — and must be worth it even so. Operationally speaking, we remember others more intensely we’ve shared eye contact (www.ncbi.nlm.nih.gov/…. ). Those of us who love nature feel a connection with wildlife, and it’s not unreasonable to feel that seeing their eyes communicates what’s going on in their minds. As much as we can, they being different species.
I have to say though I like it better when birds aren’t looking right at me — I feel like I’m intruding on their space. But it’s sure clear they are perceiving our presence. Dangerous? Weird alien? What are your thoughts about the eye to eye lock?
Hermit Thrush
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White-crowned sparrow
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Sometimes it’s really obvious when a bird is looking at you.
Red tailed hawk
Other times you’re getting a side-eye.
Rufous hummingbird
But I have no idea whether this coot sees me or not. I’d like to know.
American Coot
There’s a lot of variation in the appearance of birds’ eyes. Some have a colored iris that contrasts with its pupil.
Sharp shinned hawk
Green heron
Rhinoceros auklet
Tricolored heron
…. whereas others are black on black. It’s a lot harder to tell what these birds are looking at. I have to judge that based on the direction of the gaze. I wonder why so many birds have black eyes. Might that make them less visible to predators or competitors? Or could there be a physiological advantage?
Does it feel more difficult to read a bird that has black eyes?
Barred owl
Red crossbill
Regardless what color a bird’s eyes are, they fill their eye opening — birds have no “whites of their eyes.” Since most birds can’t move their eyes around in the sockets due to the shape of their eyeballs (en.m.wikipedia.org/...), a surrounding white couldn’t be used to indicate the direction they are looking, the way our eyes do. We can hold our head still and still look left or right, but the location of the white around our irises gives away the direction of our interest.
Here’s an interesting optical feature that plays a role in how we perceive the expression of a black-eyed bird. Have you ever noticed a tiny point of reflected light on a dark eye? It’s called a catchlight (www.slrlounge.com/) … and professional photographers go to great lengths to include them. They make a dark eye come alive. For example, in this capture of feeder birds, the House finch has a catchlight while the Junco does not. To me, the Junco’s eyes look “dead” while the finch is vibrantly alive.
House finch, Darkeyed junco
Compare these two views of a Song Sparrow moments apart. Same bird, but the feeling we get is different based on that tiny point of light.
Song sparrow
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In some species of dimorphic birds there’s a gender difference in eyes. Males not only have showier plumage, but their eyes are more visible too. Females may find a sharp contrast between his eye and body appealing when she’s choosing a mate.
Brewers blackbirds
Hooded mergansers
Another way to make eyes stand out is when plumage pattern focuses attention toward the eyes.
White-winged scoters have white eyes and a white plumaged swish below
Trumpeter swans black eyes form a corner of the broad sweep of their bill
American robin has white crescents around its black eyes
Or the eyes can be noticeable just by their shockingly bright color.
Western grebe
Double crested cormorant
There doesn’t seem to be a consistent eye pattern in related birds. Some owls have yellow eyes, some have black. Some doves have black eyes, some have red.
Ground dove
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Mourning dove
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One eye color pattern that is common among birds is how they change from juvenile to adult. Raptors, woodpeckers, grebes, thrushes, ducks, gulls, cormorants, loons and vireos are able to judge the age of each other this way, maybe to determine the maturity of an individual as a possible mate? Maybe it’s a sign of status?
Adult Bald eagles have yellow eyes, while juveniles eyes are brown.
Juvenile Black Oystercatchers lack the yellow eye and orange eye ring of the adult
Regardless of the variation, all these birds express their character through their beautiful eyes, and we humans can perceive it. We cross the species barrier when we gaze into the windows of their souls.
Do you have some favorite birds’ eyes?
And of course, the Dawn Chorus is now open for your birdy reports of the week. Who’s been singing or nesting or perching at your place?
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