My Male Budgie is Aggressive towards my Female Bird. What can I do?

Hello Parrot forums,

I have 3 Budgies.

A.A Blue Female Budgie(5 years old)

B.A White Female Budgie(Around 1 years old)

C.A Green Male Budgie(Around 1 years old)

My blue budgie had a partner that died in 2018. As a result, a family member of mine bought two new budgies immediately after. I did not have any choice in the decision(nor was I there) , and it's not in my heart to return my pets to to pet stores, etc so I just dealt with it.

For the rest of 2018 and of 2019, they all tolerated/got along with each other. I even bought a much bigger cage in Early 2019 that could fit up to 4-5 budgies at the same time. Everything was okay for awhile

The problem? Around January, my male budgie started getting aggressive towards my blue budgie. To the point where he would try to pick after her or chase her, aggressively. However, he is attached to my white female budgie, to the point where you can pretty much consider them a "pair". Essentiallu, he now bullies the blue female budgie when all 3 of them are in the same cage. To the point where I've had to (temporarily?) separate them

The interesting things i've noticed are that

1. The white and blue female budgies tolerate each other. Although the blue female is aggressive towards the white one if she comes too close, they overall get along/stay out of each others way. Especially with the big cage that they are in.

2. The aggressive green male and blue female budgie ONLY get along if they are in the same cage/area only. Basically they only get along if the white female budgie isn't in the same cage.

Basically, if all three of them are in the same cage, my green budgie gets aggressive towards my blue budgie.

The Question
Is there any method I can partake in, to where they can possibly co exist in the same big cage again? Because it seems that when they aren't in the same cage, they all cry for each other. When they are in the same cage, the male gets aggressive. And overall, the work load of separating them/cleaning their cages/having them all fly has been increased dramatically


NOTES:
-The only other times the Green Budgie doesn't get aggressive is when it's very early morning(eating), or when I put them to bed.

- I've thought about getting another male budgie, but I'm not sure if it's a good idea. As my Blue Female Budgie has suffered from Chronic Egg Laying in the past. To the point where she had a prolapsed cloaca around June/July of 2019 and would have literally died if my Vet didn't help(he put it back up and used lupron on her, and she's been ok ever since)

Sorry your experiencing this.

You’re not going to like the answer: yes, you’ll have to permanently separate them. You can’t make birds like each other. Especially when it sounds like hormones may be involved.

I think about 90% of cases keeping 3 parrots end on fightings. Many people say this is the worst number combination because two of them will create a pair and one is without a friend and will fight to get. I was keeping together 3 Bourkes - another species but they are one of the calmest parrots. At the beginning also everything was ok until male created a pair with one of females. Then the second female started chasing both other Bourkes (she had a rule: escape or I'll bite you!)
There are 2 ways of soulutions:
- separate them as aboth
- Maybe if you buy another male, they will start tolerating again (I don't mean from the beginning), let's wait for other opinions

Not sure if you're the same person who posted under saintman3600, but the advice is the same!

You will need to separate your budgies as a matter of urgency and house them in different cages. As chris-md mentioned, you cannot force two birds to like each other if they’ve decided they don’t. Hormones may also be a major factor at play here, and this is a biochemical condition that your birds cannot control.

I wish you the best of luck with your budgies!