Grey squirrels are a common sight in the UK, and many people wonder about their breeding habits. In the UK, grey squirrels typically have two litters each year, with babies being born in late winter and early summer. This is a fascinating time for squirrel watchers, as you may spot tiny, fluffy kits peeking out of their nests.
From February to March, the first litters make their appearance. The second wave usually happens around June. These adorable babies are born blind and hairless, relying completely on their mothers for care. It’s amazing how quickly they grow, developing fur and opening their eyes within just a few weeks.
If you’re curious about how to help or observe these charming creatures during their breeding season, keep reading. Discover the best practices for enjoying their antics while respecting their natural habitat.
Breeding Habits of Grey Squirrels in the UK

Grey squirrels have specific breeding seasons that impact their population dynamics. Understanding their behavior can enhance your appreciation for these lively creatures.
Understanding the Breeding Season
Grey squirrels typically have two breeding seasons each year. The first occurs from December to February, and the second happens from May to June. During these times, females who are about 6-8 months old can mate.
After a gestation period of about 44 days, female squirrels give birth. They usually have two litters annually, with two to four young in each litter. Baby squirrels, known as kits or kittens, are born blind and hairless. They depend on their mother for care during their early weeks.
Mating Behaviors and Rituals
Mating season is quite active for male squirrels. They often chase females and engage in playful displays to get their attention. This courtship involves a lot of chasing and vocalizations.
After successful mating, the male plays no role in raising the young. The female uses her nest, either a winter drey or a newly built one, as a safe space for her offspring. Once the babies are weaned, the mother may spend less time with them, encouraging independence. This allows her the freedom to prepare for the next breeding season.
Development and Life Cycle of Juvenile Grey Squirrels

Juvenile grey squirrels go through significant changes as they grow from helpless babies into independent young adults. Understanding their development process is key to appreciating their life cycle and behavior.
From Birth to Weaning
When baby squirrels, also called kits, are born, they are tiny and vulnerable. They are born blind and hairless after a gestation period of about 44 days. These little ones rely entirely on their mother for care.
At around three weeks, the kits begin to open their eyes. In the nest, they stay warm and safe while their mother feeds them. The litter size typically ranges from three to four baby squirrels, although it can be as high as nine.
Weaning occurs at about 8 to 10 weeks of age. During this time, your young squirrels start to eat solid food while continuing to nurse. This transition is crucial for their growth and development.
Growth Milestones and Sexual Maturity
As young squirrels grow, they reach several important milestones. From weeks three to six, they develop fur and become increasingly active. You may notice them playing and exploring inside the nest.
Around six weeks, young squirrels venture outside the nest for the first time. They start climbing trees and practicing their skills. At about 10 to 12 weeks, they become fully weaned.
Sexual maturity is reached around 10 to 12 months. At this age, your juvenile squirrels are ready to mate and start families of their own. This life cycle keeps the population of grey squirrels thriving in your area.