Please note: supplied as 4 x 2.5kg bags. Large 10kg sacks are no longer available for this product. Keep your garden birds healthy with this perfectly balanced food mix. The richly varied mixture of ingredients means it will attract many different bird species. The inclusion of dried mealworms and oystershell grit make Vitality Mix an excellent choice, particularly during the breeding season when both young and adult birds need extra nutrition.   Keep your garden birds healthy with this perfectly balanced food mix. The richly varied mixture of ingredients means it will attract many different bird species. The inclusion of dried mealworms and oystershell grit make Vitality Mix an excellent choice, particularly during the breeding season when both young and adult birds need extra nutrition.