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Owl-natomy: Eye coloration

Source: Into Birds

If you look closely at an owl’s eyes, you’ll notice the owl’s eye colors are different.

The color of an owl’s eyes tells a story about their lives.

An owl’s eye color helps us identify their species and indicates the time of day they predominantly hunt.

Although this isn’t always accurate with every owl species, as a birdwatcher, it helps pinpoint your best chances of seeing one.

Dark Brown or Black Owl’s Eyes

Owls with dark brown or black eyes are nocturnal, meaning they prefer to hunt at night.

The dark eye color doesn’t help the owls to see in the dark. It’s an evolutionary trait to help them to camouflage in the darkness.

There are many species of owls with dark eye colors, including the Northern Spotted Owl, Barred Owl, and Barn Owl.

You might have some of these owls in your back yard right now.

Barred Owls are large gray-brown and white birds with round heads, no ear tufts, brown eyes, and a small sharp dull yellow beak.This owl is named after the bars on its chest.

These owls can capture prey in total darkness with their incredible sense of hearing.

There’s a chance you might see one of these owls in daylight on a cloudy day, but these sightings are treasured moments.

Orange Owl’s Eyes

Owls with orange eyes are crepuscular, meaning they’re active during low light periods such as dusk and dawn.

Owls with orange eyes prefer hunting for their meal in the soft light of the early morning.

Species of owls with orange eyes include the Eurasian Eagle-owl. 
Eurasian Eagle-owls are visually striking animals with their bright orange eyes, mottled feathers, and ears tufts.

Yellow Owl’s Eyes

Owls with yellow eyes are diurnal and prefer to hunt during the daytime.

Great Gray Owls are patterned with fine white, gray, and brown streaking and faint barring. Their yellow eyes shine through the fine gray-and-brown concentric circles of their facial disk with two pale arcs forming an “X” between their eyes. Their habits are just like humans.

Owls with yellow eyes are active in the day and sleep at night.

Common owls with yellow eyes include Burrowing Owl, Great Gray Owl, Northern Saw-whet Owl, Short-earned Owl, Great Horned Owl and the Snowy Owl.

Their beauty is simply undeniable.

These owls have excellent eyesight but rely on their hearing to detect mice or other small rodents moving beneath the snow.

Then they swoop down and grab their prey with their talons.

The Short-eared owl has pale yellow to bright sulphur-yellow eyes with a greyish-brown cere, and a blackish bill. Their tiny ear-tufts are set close together near the center of its forehead, often not visible, and erected only when excited.

Luck is When Preparation Meets Opportunity

Success at finding an owl often results from being in the right place at the right time.

The Great Horned Owl is the quintessential owl of storybooks with its intimidating yellow-eyed stare The Great Horned Owl is the quintessential owl of storybooks with its intimidating yellow-eyed stare It takes patience, persistence, preparation, and some luck.

But the chance of seeing a beautiful up-close is worth the effort.

Now get out and see some owls.

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22 comments
  • I find them all striking in their own way, especially since it is functionally different for each bird's role.

    Do you have a preference?

    I was reading an paper about heterochromia in owls (different colors in each eye) and it sounds very infrequent in birds, probably since it is more than just aesthetically different. It only had one picture, and may just have been an eye infection or disease, and it was a scientific paper.

    The majority of you guys seem to enjoy pics more than hard news article type things, so I usually keep it to that, but if anyone is interested in the research paper, let me know.

    You're always free to request stuff from me. If I'm putting in the effort, I want it to be for stuff you guys are enjoying. I'm typically not a social person, so taking the lead on here picking "interesting" things for a general audience is a learning experience. Some stuff I think you guys will enjoy falls flat, and other things I debate even posting get tons of upvotes.

    After the 50 States of Owls runs out, I'm thinking of randomizing the list of every known species (250+) and just featuring one a day.

    I've enjoyed seeing a rise in interest in the owl-natomy posts. I still try to keep them not too sciencey, but I hope you're enjoying them.

    Sorry for turning this into a State of the Community thing, but again, I just want to post what you guys actually want to see.

    • I'd be interested in that paper!

      I just found this magazine, so idk if I get to make requests, but I would really enjoy reading more about owls if you're down with sharing what you know.
      I don't know enough about owls yet to have further questions or requests but it will probably happen.

      • Welcome! We've been steadily growing, and I try to at least throw a little education into most of the posts. I'm not an expert on any of this, just an animal lover, so I learn things as I find content for here.

        Check out the previous posts for lots of good stuff, and I've kept the "owl-natomy" titles pretty consistent if you just want to search those out in particular.

        If you want to see owls in person, I've been posting places to go in each state, and I can try to find something where you are if you say something near such and such city.

        I'll find that hererichromia paper and put that up today for you.

22 comments