squirrel stood on log in forest area

Are squirrels an invasive species?

An invasive species is an animal or plant which harms an environment after being introduced to it by humans.

While they may be cute and seem relatively harmless, are squirrels an invasive species?

The answer to this is yes. The grey squirrel in particular is a highly invasive, non-native species. They were first introduced to the UK from the USA between 1976 and 1929. They’re now so widespread that they’re classed as one of the 100 worst global invasive species.

Why are squirrels an invasive species?

Grey squirrels are considered an invasive species because they have two primary negative impacts on biodiversity in the UK.

• They cause damage to trees and woodland because they strip them of their bark in order to access the sweet phloem tissue underneath. This restricts the growth of the tree and also increases the risk of it suffering fungal infection. Damage caused by squirrels more often than not results in the death of the tree.

• Egg and chick predation is another significant issue with grey squirrels. They have also pushed the native UK red squirrel to near extinction.

If you have a squirrel infestation, please call Prokill on 0800 328 9354 or contact us via our online form and we’ll send one of our experts out to help. We strongly advise trying to eradicate the problem yourself due to strict CRRU guidelines which must be adhered to at all times.

Kate King

Kate King – Digital Marketing Executive
With over 20 years of experience in digital marketing, specialising in SEO, PPC, social media marketing, content creation and conversion optimisation.  In my role at Prokill Pest Control, I am responsible for website content, digital marketing and helping make pest control information clear, accessible and useful to customers. Focusing on improving online visibility, creating informative content and ensuring customers can easily find the information they need.

Qualified, local pest specialists throughout the UK. We provide effective, tailored solutions for pest control.