Bullsnakes are well known for seeking out cliff swallows under bridges; Yale Peabody has had such an exhibit for years (was still there when I last visited). During a trip to Nebraska and South Dakota with John Meltzer some years back we specifically sought out such bridges and nests in search of sayi (if it wasn't rainy and 45 degrees the whole trip we may have found some!) All Pituophis are good climbers and swimmers, hence their success. Nice tricolor Bull by the way!

Bart Bruno

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