We were given catnip for our cat. We planned to give some to the chickens to calm them down as we are trying to merge the new chicks, almost 4 months old, together. But we were told it also has silver vine in it. Acts like a stronger type of catnip. Silver vine has a lot of other uses aside from making cats roll around In it. We just can’t find any information on what it will do to chickens. Will it harm them or mellow them out? Anyone know?