This plant is killing songbirds across North America! If you have one or see one with berries, cut off the berries and compost them. Nandina domestica (heavenly bamboo) is from China and so our birds mistake it for a food source. The seeds contain a ton of cyanide and cause a swift and extremely painful death. I cut the berries off my neighbours yesterday, but he said he has already found a few dead birds. Such a simple thing could save hundreds of lives. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3005831/