Do windfarms kill birds? How Australia can limit the impact on threatened species

Bob Brown's objection to a proposed windfarm draws attention to where renewable energy projects are being built

Do windfarms kill birds? Unarguably, they have and do.

The damage turbines can inflict was infamously highlighted at California's Altamont Pass, where early industry farms were built in a migratory path. One estimate suggested it killed as many as 1,300 birds of prey a year before changes were made to reduce death rates.