Passwell Crumbles 500g. Passwell Crumbles are a low-fat, balanced diet for small parrots, cockatiels, budgies, lovebirds, canaries, finches, quail and doves. Use crumbles as a nutritional replacement to dry seed in the diet. Key Features: Provides excellent nutrition compared to seed-based diets. Improved health through elevated levels of essential amino acids, omega-3&6, vitamins and minerals. Low fat formula helps with weight control in pet birds. Totally edible to reduce waste and mess.