Adored by Robins, this mix is packed full of oil-rich Sunflower Hearts to give them energy, but also contains dried insects and soft fruits. Robins and other ground feeding birds, such as blackbirds and wrens, naturally forage for insects and fruits so this is the perfect mix to attract them to your feeders. Adored by Robins, this mix is packed full of oil-rich Sunflower Hearts to give them energy, but also contains dried insects and soft fruits. Robins and other ground feeding birds, such as blackbirds and wrens, naturally forage for insects and fruits so this is the perfect mix to attract them to your feeders.