They will do best on a commercial Budgerigar mix, eating approximately 2-3 teaspoons of seed Different species of birds eat different types of seed and seed mixes for canaries or wild birds are not suitable for Budgies.
Budgerigars crack the seed, eat the kernel, and leave the husk.
Often the husk is left in the seed bowl giving the impression that the bird still has a seed supply. Always remove the husks daily and top up the seed. You can also supply a mixture of sprouted seeds by taking half a cup of your budgerigar seed mix and soaking it in fresh water overnight, then pouring the seeds and water onto folded absorbent kitchen paper towels. Within two or three days you will have a nutritious mixture of sprouted seeds. Remove all uneaten sprouted seeds, fruit and vegetables daily as old fruit or vegetables can make the bird ill.