/ barn owls Content for UC Davis en /climate/news/fall-best-time-clean-nest-boxes-barn-owls The best time to clean nest boxes for barn owls is fall to avoid disturbing them during their winter breeding season, finds UC Davis research. September 07, 2022 - 10:00am Katherine E Kerlin /climate/news/fall-best-time-clean-nest-boxes-barn-owls