Manhattan's Upper West Side has been reveling in the company of its latest celebrities: A family of barn owls nested in a water tower atop a building near Central Park.

This is the first documented instance of barn owls nesting in Manhattan in modern history, according to one expert, and the owls have attracted nightly crowds of people in the street eager to get a glimpse of the elusive birds.

"It was, like, totally shocking," Andrew Farnsworth, a migration ecologist at the Cornell Lab of Ornithology, said of the barn owls.