Why is killing ineffective and ecologically disruptive? The coyote’s remarkable success appears to be closely related to human attempts to control the animal’s population. As with other carnivore species, coyote populations are naturally regulated by available food and habitat. Lethal control, however, can disrupt the group hierarchy, allowing more coyotes to reproduce, encouraging larger litter sizes because of decreased competition for food and habitat, and increasing pup survival rates. It is also likely that lethal control favors the survival of the most resilient and genetically robust coyotes. More critically, with the disruption of pack structure, training across generations of coyotes that promotes consumption of wild prey can be compromised and increase killing of livestock and pets.
Adaptable to diverse environments, coyotes provide the following ecological benefits: Coyotes limit mesocarnivore populations and increase bird diversity. An abundance of mesocarnivores such as skunks, raccoons, and foxes as well as feral cats can have a destructive impact on bird populations by raiding nests, etc. While coyotes can coexist with these species, studies indicate that coyotes limit mesocarnivore populations largely through competitive exclusion, thereby having a positive impact on ground-nesting birds and songbird diversity and abundance. Coyotes provide an invaluable public health service by helping to control rodents, thus reducing the spread of rodent-born zoonotic diseases such as plague and hantavirus. As scavengers, coyotes provide an ecological service by helping to keep our communities clean of carrion (dead things).
There is no magic answer to all predator situations; each predation event includes unique circumstances, so unique responses are required. Overall, the best approach to protect your livestock (and pets) is to make predators think that eating at your house will be harder than feeding on field mice and cotton-tailed rabbits. You can do this by developing knowledge and understanding of predators, and by learning to apply non-lethal techniques that reduce predation.