Invasive Species Management and Wildlife Welfare

Managing invasive species to protect native wildlife raises welfare questions about methods used to control or eradicate invasive animals.

Key Facts

Invasive species are the second largest cause of global biodiversity loss
Grey squirrels, mink, and signal crayfish are major invasive species in the UK
Trapping and lethal control are primary invasive species management tools
Fertility control offers welfare-positive alternatives for some invasive mammal species
Native species displaced by invasives suffer welfare harms from reduced habitat and food availability

Welfare Considerations

Invasive species management creates a welfare conflict: native animals suffering from invasive species displacement versus invasive animals subjected to lethal control. There is no simple welfare resolution, but management approaches that use the most humane available methods, minimize suffering in control activities, and pursue fertility control where feasible represent the most defensible welfare position. Conservation of native species reduces native animal suffering at population scale.

What You Can Do

Support invasive species management that uses the most humane available methods
Advocate for fertility control options to be evaluated before lethal control is implemented
Engage with invasive species management consultations to raise welfare considerations
Donate to organizations developing humane invasive species management approaches