My girls are in an enclosed run cleaning up my garden plot for the winter. I give them fresh cut grass daily as well as other goodies from around the yard such as pokeberries and dogwood berries. I have access to a bounty of nandina berries (the red ones) I would love to give them but I don't know if it's safe. Does anyone have any info or experience feeding nandina berries? I hate to pass up a good free food supplement. Thanks in advance for any advice you can give.