Nandina are also poisonous to birds.

Nandina berries contain a tiny amount of cyanide along with other alkaloids that produce hydrogen cyanide (HCN) which is a highly toxic substance to all humans and animals. Eating too many of these berries can be fatal to the birds they’re usually planted for. If you want to keep them in your landscape – it’s recommended you prune the berry laden branches off.

Recommended native replacements for Nandina:

Possumhaw (Ilex decidua)
Highbush Blueberry (Vaccinium corymbosum)
American Beautyberry (Callicarpa americana)
Virginia Sweetspire (Itea virginica)
Arrowood Viburnum (Viburnum dentatum)
Spicebush (Lindera benzoin)
Red Chokeberry (Aronia arbutifolia)