Disease In Squirrels

Disease In Squirrels

Squirrels carry a variety of internal and external parasites, including lice, ticks and mites. Although most cause little discomfort to the animals, two in particular are known for their severe, often fatal, effects.
 Red squirrel at feeding bowl


Coccidiosis is caused by a parasitic protoazoan, which lives in the gut. Red squirrels can contract this disease by eating at squirrel feeders harbouring the parasite.

It is thought that Coccidiosis contributed to the dramatic decline in the number of red (and grey) squirrels in Britain between 1900 and 1925. Unfortunately, whilst grey squirrel numbers began to rise again, red squirrel populations never recovered. 

Please ensure your squirrel feeders are cleaned regularly.


Squirrelpox Virus

Poxed red squirrelSquirrelpox virus is a disease that is fatal to red squirrels and is a significant factor in the decline of red squirrel populations in the UK.  Please see our Squirrelpox virus page for more information.

The RSSS project is carrying out a Squirrelpox Surveillance Program to identify any areas where Squirrelpox outbreaks are occurring, or that may be at risk of an outbreak.  To do this we need to blood samples from grey squirrels.  Grey squirrels that have been exposed to the virus will have developed immunity, and the analysis of blood samples will check for antibodies to the virus. Where grey squirrels are found to have Squirrelpox virus, the project will alert the public to the outbreak and increase the trapping effort in that area to try to reduce the likelihood of an outbreak of the disease in red squirrels.

Click here for a printable version (pdf)

Click here to report a squirrel sighting.
Please note this link will open a new window which will take you to the Scottish Wildlife Trust website where you can record your squirrel sightings.


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