Gardman Suet Filled Bamboo tubes are filled with high energy suet and seed mix. The log comes with an attached string for easy hanging. We recommend hanging from tree branches and bird stations. You may find that smaller clinging garden birds will be particularly attracted to this bamboo. Although suet is popular for winter feeding as it is an essential high source of energy which is needed in the colder months, these suet cones can be used for all year-round feeding giving the birds some extra high energy supplement and they are particularly great for nesting season.