Size difference: Cockatiels are typically larger than budgies, with body lengths ranging from 8 to 13 inches including the tail. Budgies, on the other hand, are smaller parrots with body lengths around 7-9 inches. This difference in size can lead to conflicts, especially if the budgie feels intimidated by the larger cockatiel.
Temperament: While both cockatiels and budgies are generally sociable and friendly, they have different personalities. Cockatiels tend to be calmer, quieter, and more gentle, while budgies are often more active and playful. Their personalities and activity levels may not mesh well together.
Dietary requirements: Cockatiels and budgies have different nutritional needs. Cockatiels require a balanced diet that includes a variety of seeds, pellets, and fresh vegetables. Budgies also eat seeds and pellets but may also require more fruits and vegetables in their diet. Providing the right diet for both species in a shared cage can be challenging.
Social needs: Cockatiels and budgies can both form strong bonds with human owners. However, they also need social interaction with their own kind. Keeping them together may not adequately fulfill their social needs, and there is a risk that they may become lonely and stressed.
Competition: Sharing a cage can create competition for resources such as food, toys, and perches. This competition can increase stress and lead to conflicts, further complicating their cohabitation.
For these reasons, it's generally recommended to keep cockatiels and budgies in separate cages. This allows you to provide each bird with the appropriate diet, environment, and socialization opportunities that best suits their needs and temperament.