Bird Barrier Bird Gard 110v Pro 1 (sd-bg40) works on smaller birds like pigeons, starlings, seagulls, and sparrows. The Bird Barrier Rotating Owl Bird Deterrent (sd-owl2) is an option to use for keeping buzzards/vultures away. We did find a helpful article here as well.
Per the manufacturer, the Bird Barrier bird Gard 110v Pro 2 (sd-bg42) does include hawks as a target species, however, the Bird Barrier Bird Gard 110v Pro 1 (sd-bg40) does not.
The Bird Barrier Bird Gard 110v Pro 1 (sd-bg40) is programmable and have on-off and a volume control feature for your convenience. It also has a time-off sound and a 24 hour day and night switch.
According to the manufacturer, the Bird Barrier Bird Gard 110V Pro 1 (sd-bg40) has not been proven effective for deterring vultures. You may consider using a product like MasterLine Bird Spike System - Stainless Steel, which is an economical solution to keep birds from landing and roosting where they should not, and is useful against many birds, including vultures.
No, Bird Barrier Bird Gard 110v Pro 1 (sd-bg40) is unlikely to work on hawks. There are not many products on the market for hawk control as they are seen as beneficial.
The Bird Barrier Bird Gard 110v Pro 1 (sd-bg40) has not been tested for hawks therefore it may not work. Please contact us at 866-581-7378 M-F 9-5PM EST for additional information.
According to the manufacturer, the Bird Barrier Gard 110v Pro 2 (sd-bg42) would be the more effective choice to repel the hawk you are dealing with, and it should not have any negative impact on your chickens and guineas.