Viewing the nest up close is difficult because of the tower's height, but it appears to be similar to the one constructed by hawks Pale Male and Lola above New York City's Central Park, which has been home to 23 hatchlings over 11 years.

The two Westwood hawks began constructing their new residence about a week and a half ago, but no one knows where they came from or why they decided to build a nest in the middle of urban Westwood.

Mann Theatres, the owner of the building, is looking into the situation to decide what to do.

"We're going to respect what stage the nest is at and are getting experts' advice on the best course forward," said Peter Dobson, chief executive officer of Mann Theatres.

Federal law and the Migratory Bird Treaty Act make it illegal to move or disturb nests with young by birds protected under the act, which includes the hawks.