The cage looks nice.
I recommend you remove the wooden dowel perch in the cage and replace it with natural wooden perches of varying diameters to help prevent pressure sores.
Pressure Sores
The information in this link will give examples of better options for perches:
Essentials for a Great Cage
Be sure you quarantine the new bird.
Quarantine means housing the new bird in a different cage in a different room than the current bird (as far away from the room the current birds are in as possible) for a period of 35-45 days.
Birds mask symptoms when they are ill. Symptoms may not show up for over two weeks.
Often you will not even realize your bird is not well. Many avian illnesses are airborne which is why you need to quarantine your new bird in a completely different room.
It is also a good idea to always take a new bird in to see an Avian Vet for a "well-birdie" check-up. This allows you to develop a good relationship with the vet and the vet can establish a baseline for your bird in case of any future illnesses or injuries.
After quarantine, when you introduce your cockatiel to your budgies, make sure you supervise them very closely.
Good luck and best wishes!
I recommend you remove the wooden dowel perch in the cage and replace it with natural wooden perches of varying diameters to help prevent pressure sores.
Pressure Sores
The information in this link will give examples of better options for perches:
Essentials for a Great Cage
Be sure you quarantine the new bird.
Quarantine means housing the new bird in a different cage in a different room than the current bird (as far away from the room the current birds are in as possible) for a period of 35-45 days.
Birds mask symptoms when they are ill. Symptoms may not show up for over two weeks.
Often you will not even realize your bird is not well. Many avian illnesses are airborne which is why you need to quarantine your new bird in a completely different room.
It is also a good idea to always take a new bird in to see an Avian Vet for a "well-birdie" check-up. This allows you to develop a good relationship with the vet and the vet can establish a baseline for your bird in case of any future illnesses or injuries.
After quarantine, when you introduce your cockatiel to your budgies, make sure you supervise them very closely.
Good luck and best wishes!