The forest is also home to around 50% of England's red squirrel population, and is their biggest remaining stronghold in the country. The best place to catch a glimpse of one is at the squirrel hide at Kielder waterside. It also provides excellent habitat for many species of birds of prey. In 2009 a pair of osprey ("Pandion haliaetus") nested successfully in the forest. This pair have continued to nest there each year since, and a second pair nested in 2011. In 2014 eight young were fledged and by 2016 there were four nesting osprey pairs fledging eleven young. A large population of roe deer is actively managed.