In case anyone is interested in an alternate location for Chimney Swifts, there is a large chimney at a school on Gallows Rd. that has had hundreds of them the past few years (I haven't gotten out there to look for them yet this fall). To get to this location, take Gallows Rd. outside the Beltway and drive about a mile until you cross Rte. 50. You will see the chimney a short distance further along Gallows Rd. on the left. Mike Collins Annandale, Virginia collins@ram.nrl.navy.mil