Alexandre Roulin has a lifelong love affair with the enigmatic barn owl. Thanks to his pioneering work, the winged sentry of church belfries is flourishing, safeguarding other species all the while. The barn owl is also nature's ultimate nocturnal pest patrol, making it a farmer's best friend. No wonder Alexandre Roulin is a favorite among bird lovers. Thanks to the flock of students and volunteers under his wing, friendship and ornithology have seldom been so harmoniously intertwined.