I was told Lulu was a girl but now I'm not very sure. I don't want baby budgies and I'm not equipt for them. as far as I can tell based on the pictures in the stickies, she shouldn't have a mutation that changes her cere. Of course I'm not sure on that either, otherwise, I probably wouldn't have to ask about the gender either. If you need more pictures, be sure to ask!
On my desktop iMac, Lulu looks to be a young male (clear purple cere). You might want to send another photo or two with a front view in daylight, but I'm voting that this is a Louie.
Handsome boy.
My first instinct is to say male. As mentioned above, the pic is not real clear. There seems to be a haziness to the photo, obscuring the cere a bit.
Again, it “appears” you have a male, but we’d rather be accurate than guess. To confirm it, we need a close and in focus frontal pic of the cere in good natural lighting.
From the pictures, I would say you have a handsome male.
Since it appears you have a mixed gender flock, it will be important you do everything necessary to discourage breeding.
Rearranging their cage frequently, and limiting the light they get to 8 hours a day will help tremendously. Please be sure you never put a nest box or anything that could be used as a nesting site in their cage.
When they come into condition, limit the amount of protein in their diet at that time.
If you follow the links provided there shouldn't be any cause to worry about breeding. I had a male and female together for years with no problems whatsoever!
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"The LORD your God is with you; the mighty One will save you. He will rejoice over you. You will rest in His love; He will sing and be joyful about you." ~Zephaniah 3:17
To answer your question above; bickering for one, which can turn into fighting if one hen claims territory. Which again, goes back to making sure no one has the breeding urge. Regardless, a lot of the time when you have 3 budgies together, one is the third wheel. If not picked on, then left out. Some groups can be okay with the arrangement, but generally, it shouldn’t be purposely set up this way.