Hey, would you like to see my bird room? Or … I should say… the main bird room (I have birds in 3 rooms now!
The smallest cage I recommend for a pair of finches is 30X18X18. That’s because a flying bird is a healthy bird. You want them to fly around.
Like most pets, it isn’t too expensive to get started with finches. What is important is to buy the right gear: The cage, the food,
Gouldians need to be able to fly in their cage; it’s good exercise and it keeps them healthy. Hopping from perch to perch doesn’t cut it. So before you do anything else, please buy at least a 30X18X18 cage for your finch.