Thank ou very much for your respond ,Frankly speaking I am familiar with birds ,I have them from 12 years old .
At frist when I was a little child my Father was keeping Canary ,then When I am turn into 12 years old I have bought two budgies and keep them for one year (They had escaped because they were out side and I forgot to close the door of the cage )
Then I had bought 4 finches and seprate them into two cages .
They had breed and I keep their chickens for around 5 years ,as you have seen its not my first experience ,Just I love birds and I like to see their circle of life .
Today I have seen a new cage with the tall of 60 inch ,the height is quite big ,but the width of the cage and the length of that it was around 20 inches ,the store man was keeping around 20 budgies inside of that I dont know if It will be good to change again the cage to that size .
I have also see another cage which is so simple but the length is 30 inches ,height is 26 inches and the width was around 20 or less .
Which one of this cages would you think will be good for at least 4 budgies because me and my wife would like to increase them and have some new colours also .