Harrison's High Potency feeds are specially designed for switching to Harrison's Bird Foods, for moulting birds, underweight and overweight birds, hand-fed birds under 6-8 months old and sick birds or birds with special needs. Certain bird species such as grey redstarts, macaws, palm and moles cockatoos and golden parakeets may be given High Potency all year round.

Harrison's High Potency Coarse is specially designed for medium to large bird species, such as grey redstarts, Amazon parrots, macaws, cockatoos, noble parrots and toucans. Among others, it can be used in recovery from diseases such as liver and kidney problems, in highly active birds or during colder climate conditions.