Hi all, For several years now we have had a mating pair of Barn Swallows nest in the garage--always the same nest, always early spring. Last year we had a different pair of Barn swallows show and build a nest about 2 feet away from the other one and had a summer brood. All was fine til about 2 weeks ago when Pair #1 tore out Pair #2's nest--I figured this was just terrirorial. Pair #1 seemed to be "cleaning" their nest and I had been out there working in the garage (they've gotten fairly used to me outthere and it was only maybe 10min. here and there) and forgot to shut off the light for 2 nights, on day 3 I went out to shut off the light and Pair #1 had tore out their nest as well. So what do you think? Did they take out their nest (#1) because of the light being left on? Are they that sensitive? or are they just moving on? Thanks!