Little information is available on the effects of guard dogs to prevent eagle predation. Some dogs, including breeds other than guard dogs, will chase birds. They would probably be more effective in protecting sheep or goats in small pastures than in large pastures and open range conditions, particularly where livestock are spread over large areas.
Sonic devices have been tested and show little benefit in preventing or reducing eagle predation.
Scarecrows, made from 2 x 4-inch (5 x 10-cm) lumber and chicken wire and dressed in pants or skirts, shirts, and hats, may keep eagles away from an area for up to 3 weeks. The chicken wire bodies allow the arms to wave in the wind. Used clothing can be purchased from outlets run by charitable organizations at low cost. Almost anything can be used as a stand, including 2 x 4s or existing fence posts. The chicken wire is attached to the 2 x 4s with a staple gun, which also comes in handy for making field repairs. Building time is about 1/2 hour.
Fluorescent orange paint can be sprayed on the backs and chests of scarecrows and their arms hung with shiny pans to increase visibility. Erect scarecrows on a high ridge or point, where sheep and goats usually bed. Most eagle predation occurs about sun-up so the lambs or kids will be close to the scarecrows during the time of greatest danger.
When eagles start to habituate to scarecrows, harass them by shooting cracker shells near perched or low-flying eagles. This activity will reinforce the fear associated with humans and scarecrows. A permit is required for such harassment. In areas where ravens are common and preying on lambs or kids, shooting or shooting at ravens keeps eagles wary of scarecrows; again, a permit is required for this activity.
No repellents are registered or effective in reducing eagle predation.
Resources: (online)
Eagles
