There are animals whose stories become famous because of extraordinary strength, unusual intelligence, or dramatic acts of survival. Then there is Zeus, a tiny Western Screech-Owl whose worldwide fame came from something much quieter: a pair of eyes that seem to contain an entire night sky.
In photographs, Zeus appears almost unreal. His dark eyes are scattered with tiny points of white and silver, creating an effect that resembles distant stars suspended against the blackness of space. Some people have compared them to galaxies. Others say they look like photographs taken through a telescope.
Yet the beautiful appearance of Zeus’s eyes is connected to the very condition that changed his life forever.
Zeus is nearly blind.
His story began in California, where he was discovered in poor condition on the front porch of a home. According to the Wildlife Learning Center, Zeus had been found in Central California both emaciated and blind. He was taken to a wildlife rehabilitation facility, where veterinarians cared for him and helped restore his general health. His eyesight, however, could not be restored. The center says he is believed to retain only about 10 percent of his vision.
For most wild animals, losing that much vision would be serious. For an owl, it can be life-changing.
Zeus belongs to a species called the Western Screech-Owl, or Megascops kennicottii. Despite the name, these compact owls do not usually produce the dramatic screech people might expect. The Cornell Lab of Ornithology describes their characteristic vocalization as a sequence of hollow whistles that speeds up toward the end, almost like the sound of a bouncing ball.
Western Screech-Owls are small but highly capable nocturnal predators. Adults are generally only about 7.5 to 9.8 inches long, with wingspans of roughly 21.6 to 24.4 inches. Healthy individuals normally have bright yellow eyes, compact bodies, short tails, small ear tufts and mottled gray, brown or reddish plumage that provides remarkable camouflage against tree bark.
They can live in forests, streamside woodlands, deserts, suburban neighborhoods and parks throughout parts of western North America. During the day, they often remain hidden inside cavities or blend into trees so effectively that a person may walk past without noticing them. At night, however, they become active hunters.
Their diet demonstrates just how important vision, hearing, timing and precise movement can be to their survival.
According to Cornell, Western Screech-Owls eat a remarkably diverse range of prey, including mice, shrews, rats, bats, insects, worms, crayfish, birds and occasionally animals as large as small rabbits. They often hunt by waiting quietly on a perch and then dropping or flying toward prey when the opportunity appears.
For Zeus, severe visual impairment meant that this natural hunting lifestyle was no longer realistic.
Even though veterinarians succeeded in stabilizing his health, they determined that he could not safely return to the wild. The Wildlife Learning Center classifies him as “non-releasable” because his vision loss would prevent him from reliably hunting and surviving independently.
That decision transformed Zeus’s story from a wildlife rescue into something much larger.
In the summer of 2012, he was given a permanent home at the Wildlife Learning Center, a wildlife education facility in California. There he could live in a protected setting where his food, health and environment could be managed by experienced caregivers.
And before long, people began noticing his eyes.
They were unlike the ordinary yellow eyes associated with Western Screech-Owls. Instead, Zeus’s eyes appeared dark and almost cosmic, filled with glittering pale flecks that seemed to float inside them.
The resemblance to space was so striking that photographs of him spread widely online.
But the “stars” in Zeus’s eyes are not a natural feature of his species.
Reports describing examinations of Zeus have linked the unusual appearance to serious eye abnormalities, including capsular cataracts and unusual deposits involving fibrin and blood pigments. Paul Hahn of the Wildlife Learning Center has previously explained that these clots create the sparkling, star-like effect for which Zeus became famous.
A cataract is an opacity, or clouding, of the normally transparent lens inside the eye. Veterinary specialists note that cataracts can reduce visual sharpness and, in severe cases, eventually contribute to blindness. In birds, cataracts may arise from a range of causes, including traumatic injury, inflammatory disease, infection, nutritional problems, metabolic conditions or aging.
Veterinary references also make clear that trauma can lead to complex eye damage in birds. Eye inflammation and damage to structures inside the eye can interfere with transparency and normal visual function.