From Popular Science
When taking care of injured birds, sometimes a hands-off approach is the best place to start. And that’s exactly what was in store for two great-horned owls (Bubo virginianus) in the caring hands of the team at the Stanislaus Wildlife Care Center in central California.
“Great-horned owls often jump out of the nest before the babies can fly. The parents continue to care for them on the ground,” Donna Burt, a biologist and chairman of the board, executive director, and founder of the Stanislaus Wildlife Care Center, tells Popular Science. “That works fine if the owls are in a protected area, but these were in a soccer field.”
Fortunately, these birds did not have any injuries when they were brought into the animal care center, but they still needed a check-up. During a hands-off exam like this one, veterinarians look closely to see how an animal stands, walks, and looks around, to get a sense of their health and potential injuries. In the case of these four to five-week-old owls, the bird on the left is up on its feet, while the owl on the right is hock sitting. Since it is unable to stand, the bird sits back on its legs, which is a normal action for owls this age. Both birds can snap their beaks and spread their wings in threat displays, which indicates that they are feeling well.
The team can also check on the birds’ eyes during this type of exam. They have a little cloudiness, which is normal for young great-horned owls. They will also blink by lowering the upper eyelids, which is sometimes another threat display.
Great-horned owls reach adult size by 10 weeks-old.
Great-horned owls are one of North America’s largest owls. They typically weigh between 2.5 and 4.5 pounds. Baby great-horned owls are also the first babies that the Stanislaus Wildlife Care Center receives every single year. Owl pairs begin their courtship in November and lay eggs in late January or early February. The eggs will hatch in March or April. Once hatched, the owls reach full adult size at 10 weeks, but will stay with their parents until the fall.
“When we get tiny baby great-horns, we put them with a non-releasable surrogate owl who cares for and feeds them,” Burt says. “Not only is that easier for us, but it’s better for the babies. Although it can feel rewarding to hand-feed and care for the little fluffballs, it is in their best interest to be raised by owls. They grow faster and develop normal behavior.”
A baby owl with a surrogate.
While these two can eat on their own, it will be another few weeks before they can fly. As soon as the birds reach that milestone, they will move to one of the center’s larger aviaries that measure either 50 feet or 100 feet long.
If you come across baby great-horned owls on the ground who appear clean and healthy, the center advises people to leave them alone. If a bird looks injured or sick, contact your local animal control or wildlife rescue center.
Only when the last renewable energy project has been canceled, the last owl has died, and the last whale been poisoned will we realize we cannot live in a dead ecosystem.