Pavenham Osier Beds are managed as a nature reserve by the Wildlife Trust for Bedfordshire, Cambridgeshire, Northamptonshire and Peterborough.[1] They lie south of Pavenham on the banks of the River Great Ouse, in the county of Bedfordshire. An Osier bed is where historically willows were planted and coppiced to produce withies which were used for basket making, fish-traps, and other purposes. The willow species salix viminalis was typically grown for this purpose. Willow rods (cuttings) would be planted, which root easily in moist ground, and the growth of the willow withies would be cut every one or two years.[2]