Some years back I attended a thumbnail presentation at the San Diego Zoo. The brief talk a zoo animal handler gave was on a horned owl, which she had perched on a leather gantlet on her arm. read more
I don’t know for sure about the owl, but crows are extremely intelligent. The New Caledonian crow is often considered the smartest bird in the world, and corvids, especially crows, are one of the few animals that understands metatool use (using a tool to get another). read more
The owl is a smart bird, but I believe there are plenty of other birds that surpass them in intelligence. Macaws, cockatoos, even mynas exhibit problem-solving skills. Crows have been seen dropping walnuts into traffic lanes and after the nuts are cracked open by passing vehicles, go down and eat the nut meats. read more
They have a battery of bird-specific tests that assess the baseline braininess of species as a whole, and show the range of avian intelligence between species and individuals (just like humans, some individual birds are brighter than others). read more