I have got to go see this:
This is an evening trip to Monroe to watch thousands of Vaux’s Swifts go thru their evening ritual before dropping in a chimney to roost for the night. About an hour before dusk they begin circling and swirling around the chimney as the numbers keep increasing. A few will start making feints at the chimney, then a few will start dropping down into the chimney. These are followed by more and more until the sky is empty about dusk. Meet at the south end of the Kingsgate Park & Ride by 5:30 p.m. and carpool to Monroe Elementary School in Monroe. Passenger cost/person is $3.00.
In late August, migrating Vaux’s Swifts seek nighttime shelter in chimneys. A gathering of swifts waits until dusk to descend into a chimney. The swifts enter in a continuous swirl. Each swift drops into the opening with wings raised, feet first, to hang upright for the night by its claws.