[header] How to take care of a budgie [title] Buy a big cage. [step] Birds need to have some space to play and stretch their wings. If you care about their well-being, try to find a model which lets the light go through. 
The cage should be at least 50 centimeter (19. 7 in) d x 60 centimeter (23.6 in) h x 80 centimeter (31.5 in) w.