A Bird Scarer that Works! The Bird Gard™ Pro Plus will get rid of Pest Birds such as Starlings, Seagulls and Crows from multiple buildings and up to an area of 3 acres. Bird Gard™ Surprisingly Inexpensive For EFFECTIVE Control Of: Crows, Rooks, Ravens, and Jackdaws Starlings Pigeons Seagulls / Gulls Sparrows Swallows and House Martins And many more...