Many millions of homeowners use feeders to attract birds. But a two-year study suggests there may be one unintended consequence to this popular hobby. Bird feed mixtures may be helping to spread troublesome weeds that threaten agricultural crops.
Many millions of homeowners use feeders to attract birds. But a two-year study suggests there may be one unintended consequence to this popular hobby. Bird feed mixtures may be helping to spread troublesome weeds that threaten agricultural crops.