When temperatures plummet and food is scarce, birds need a sheltered roosting place in order to conserve energy. British gardeners attach woven "pockets" like these to trellises, fences or tree branches to provide safe, warm nooks for large birds during winter months and give smaller birds a cozy nest when spring comes. Offers large birds life-saving shelter in winter. Provides a nest for smaller birds in spring. Can also be filled with seed or nesting materials. Handwoven of all-natural materials. Also see our smaller-sized Roosting Pockets