Hazel is a small, shrubby tree that can be found in a variety of habitats such as woodlands, gardens and grasslands. It is famous for its long, yellow male catkins (known as ‘lamb’s-tails’) that appear in spring, and its green, ripening to brown, fruits (known as hazel nuts) that appear in late summer. These nuts are a favourite food of Grey Squirrels, Dormice and Wood Mice, and some small mammals will cache their finds, storing them in burrows or old bird’s nests.