21. There are actually at least thirty-two known primary mutations established among budgerigars . 22. I know someone who is terrified of budgerigars . 23. Mutation is common within the species, caused by " budgerigar colour genetics ". 24. Like many budgerigar mutations, it is the black melanin pigment that is affected. 25. The interaction of the Anthracite and Dark budgerigar mutations has not yet been investigated. 26. The cockatiel is second to the budgerigar as the most popular pet parrot species. 27. Mona's dreamings are Ngatijiiri ( budgerigar ) and Warna ( snake ). 28. In 2001, recordings of a budgerigar called Victor got some attention from the media. 29. There were no serious human injuries but several caged budgerigars in the garden were killed. 30. A fellow editor of Budgerigar found this: