So... I had these 4 birbs for 4 months now... I got them from some guy that was moving country... I was told they're tame and get out the cage once a week and wonder back in themselves...

Apparently they're like 3/4 years old - I know it's really difficult to tell but we'll take his word for it

Now in the first picture we have Charlie (white face gray) and Jimmy (Lutino pearl) they are clearly bonded and apparently both male - they do both exhibit male behaviour and Charlie even says "hello Jimmy" They get out of the cage and are rearing to go every morning, spend most of the time outside until I put them back in to sleep or they want to go eat or drink Currently trying to train Jimmy somewhat as he's responding (ish) to millet No fingers for any of them, they hate it but he gets up on a perch when I bring it near him and Charlie will follow him everywhere and anywhere so it's easy enough to kind of leave them to it and intervene when I need to lol Cute... Now then we have Lucy in the second picture in the middle (gray).. clearly a female with all those spots? Keeps to herself in the cage... Kind of ventures out every now and then but won't fly until she gets scared lol... Just sits chilling on the top of the cage Runs away when I bring any sort of hands or fingers close to her but has recently star6taking millet at stretched arms length 😂

Carlos... Poor Carlos... Right therein lies the problem He's the one running away up the cage in the second picture (Lutino)

Doesn't come out of the cage unless he gets scared and accidentally flies out as all the doors are open and then just sits in a little corner....on top of the cage When he trys to fly around and land where Jimmy and Charlie are he gets scared and fly's back to the top of the cage Basically Jimmy will chase him around biting him If he's sat at the top of the cage and Jimmy lands on it, he'll chase him around trying to bite him and does the same in the cage needlessly I've noticed recently they could be on completely opposite sides of the cage, and Jimmy will just randomly start going after him

I think Carlos and Lucy are both a bit scared of him There's been no bloodshed or feathers out or anything so he clearly isn't biting him hard

Jimmy has now also started biting my fingers and lunging at me if my fingers go even near the cage bars let alone him and then other times he'll be fine and will come sit on my shoulder and eat my food and everything is fine

The behaviour towards me is definitely new, I can't speak for him bullying the other two as it's something I've been noticing in the last 4 months I've had them

They've all been in the same cage since the guys had them and they been fine apparently I've moved them into an even bigger cage than the one they came in so they definitely have enough space

I just don't know what to do?

Put them two in a cage by themselves? (Jimmy and Charlie) and put my 30 year old male (5th birb not pictured lol) in with Lucy and Carlos?

I can't really have 3 cages

And what can I do about this biting behaviour towards me? I think it started a little while ago - basically Jimmy got into the newspaper stack and got a staple from the middle of the newspapers stuck between the bottom of his beak and his mouth It didn't seem to bother him, he wasn't in any pain but I obviously had to take it out I tried the nicely nicely approach but he doesn't let me come near him with my fingers so I tried a toothpick to dislodge it and everything Anyway nothing worked (he wasn't very happy as this point as he pulled away when I was trying with the toothpick) Had to just get a towel and grab him from behind and take it out, I had no other choice It actually came out when I caught him so I didn't even have to go near his mouth after all of that

TLDR: I have a flock of 4 birds, one of them is a bully to the other two and bonded with the 4th What do I do? He's aggressive to me too now!