I'll try to keep it as short as possible.
I got some society finches 5 brownish and 1 mostly black.
Was supposed to be all female but 1 at least is definitely male - being the browns look a lot alike I think it is only 1 singing but could be 2.
But female black one was being left out.
Person I got them from only had males left.
So I got a dark brown and a black and white
The black and white didn't fly and had a short tail.
He is now 2 months later flying very well.
However

Chasing all around cage back and forth. All 3 males beak fight.
At least 1 or 2 females also are quite aggressive. The black female too.
With the canaries they were pushy but the 2 canary females stood up to them especially the all yellow canary.
But the society were too aggressive with the gouldian, they like to knock each other and others off the perches. And they had corralled the gouldians into a corner.
When they were with separated with the canaries were were hostile towards each other and cranky with the society, the fighting among the society stopped. They had started sleeping all together.
I placed them in a new double wide flight cage
This didn't reduce the canaries problem.
I added more perches, plants, toys and mirrors.
I also instead of having variety of different food dishes made them all the same kind of food so the canaries wouldn't fight over their favorite dishes.
Seem to have finally done the trick of settling the canaries down.

But today the society were at each other worse than ever


Also they aren't even sleeping together.
I even lost track by evening of who's chasing who.
Some r trying to nest in the food cups.
Is this just the way they r?
I thought they were supposed to be passive and get along reasonably well with each other and like to sleep together?
Is this the way birds just act?