The McNamara Terminal of the Detroit Metropolitan Airport continues to wow visitors with its Light Tunnel, Express Tram and... bird bath?

The Detroit Free Press today reports on a curious phenomenon: Birds have taken up roost in the terminal that opened to rave reviews in 2002, and despite their best efforts, officials have been unable to force them out or determine how they got in.

Spokesman Scott Wintner told the newspaper the birds even made an appearance in last year's airport-heavy drama "Up in the Air" starring George Clooney. Check out the poster to the right. "One of our birds appears on a ledge near the top of the picture," Wintner pointed out.

Passengers have been filming birds using the terminal's fountain as a glorified bird bath

, and USA Today first reported on the "bird sanctuary" more than a year ago.

The shooing hasn't worked, and the airport is now taking a page out

, pumping in their own sound effects in an attempt to scare off the birds.

Officials say that if continued attempts fail to force the birds out, they may just accept them as part of the terminal's scenery.

And despite the feathered friends, the airport remains a popular choice for travelers. It ranked

in a recent J.D. Power survey.