They sometimes argued and had little fights but all in one both were very friendly birds.
After the death of the female I decided to get some new java finches since Nero became very quiet and seemed very lonely in his cage.
I bought three new birds (two females and one male) which all already knew each other and seemed the most friendly around other birds.
I put them in a cage next to Nero so they could get used to each other and there were absolutely no signs of aggression or anything, just four birds that were very interested in each other...so interested that both sides wanted to be with each other over the night (or at least tried to get into each others cage...in a friendly way of course).
Well, I usually wait a week before I put new and old birds together but since they were so interested in each other I decided to put them together after just two days - with a good result as they all spent the night together on the same branch.
All in one their mood hasn't changed much. They are still interested in each other, sometimes sleep on the same branch, and eat together but I also see them arguing with each other.
Of course Nero shows some dominance towards the new birds - I already knew that from my other birds and at first didn't see much of a problem in that - however I observed something else that worries me a bit:
The three birds which I bought are rather young.
Of course they have all their feathers and drink/eat on their own but one of them (the male) is still begging for food sometimes.
Another breeder, who I sometimes talk to, thinks that they are to young to be separated from their parents especially since they still have small yellow spots on the sides of their beak.
To be honest I now feel like an absolute idiot.
I have already owned many birds (canaries and zebra finches) but I always bought adults and never juveniles.
The breeder who sold me the birds assured me that they would eat and drink on their own and therefore could be separated from their parents. Of course I informed myself before getting them and never read anything else so I just bought them and didn't really think about them maybe being to young.
I have now observed them over the past days and can definitely say that they eat and drink on their own but I feel very insecure.
Is it possible that they are too young if they already eat and drink on their own?
Did I make a grave mistake or is it okay to have them here?
Now the last question: As I already mentioned they sometimes argue with each other.
Most of the time it is because the new ones try to sit/sleep next to Nero or (in the case of the new male) beg for food which results in him trying to get rid of them.
I don't know...he sometimes has phases where he tolerates or ignores them (as long as they don't come to cuddle or sleep next to him) but then he has phases where he does that 'snake-move' and randomly chases them away from a branch or toy.
Of course some arguing is normal during the first week but ...how much arguing is too much? When do I have to interfere?
I hope that someone here can help me. The new birds have such sweet personalities, I just don't want anything to happen to them.
(English isn't my first language and it can happen that I make some grammar mistakes. I would appreciate it, if you could tell me in case you find some very bad mistakes.)
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and share your food, your bed, and everything with them 
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for greenery I usually use pitisporum and sometimes silver beet and pansy plants 
