Tap water is fine. If there is dried formula in a place that the babies can reach with their beaks, they should preen it off. If they're not doing this then bathing will help get it off.

Birds usually like to sleep in high places. If you prefer for them to sleep on a perch, then put a perch in a high position.

An egg that has developed somewhat will usually turn black if the embryo dies. An infertile egg or an egg that was fertile but died at a very early stage will not do this.

It's not necessary to take them for a vet check before you sell them. 80 to 90g is a normal weight for many cockatiels and most of mine are in this range. Whether this is a normal weigh for your babies depends on how big their body size is.

Violent shaking can harm an egg, but babies fighting over sleeping spots isn't likely to shake the eggs hard enough to do any harm.

For your pearl girl, try to squeeze out just a little bit of formula at a time instead of all of it at once. Then maybe you'll have some left when she's ready to eat.

Yes, I finally figured out on my own that they prefer to sleep up high. I have a long perch high enough, but there is another, much shorter perch that is even higher. The fight was over the short perch. I replaced it yesterday with another long perch and they were happily sleeping there. The only problem is that this new perch is right above the nestbox, so the poop lands on the roof of the nestbox. I will put a paper towel on the top. We are still at the same set up that I posted some time ago, with the nestbox inside the cage.
We have new cage even assembled, but I don't have a chance to organize and introduce them to it. Final week at school.

I need to find an approach that would work for her. Which means lots of patience and time. All of them eat differently, I remember times when I said about Tator Tot that he looked at me like he was executed, but now he is one of the best formula eaters.

Hi, Chipper. Sorry you are having so many worries with your chicks. Hope the new clutch hatches fine.

Thanks Dianne. I do hope too

I am going to be out of formula after this night feeding. My online order was shipped with delay so I am expecting it here on Tuesday. I drove to the bird store as I know they carry ZuPreem that I am using but they closed early on Saturday (and they closed on Sunday). What do you think I should do?
Do other brands taste differently? Should I go get Kaytee or LaFeber (this is what available here)?

Still no chick from the second clutch

You can get another brand of formula or you can make do with oatmeal or something similar until you get the brand you want. If the chicks were younger this could cause problems, but at this age their digestion is pretty sturdy and they're not growing very fast, and they can handle it.

Thank you. I see that parcel left the city that is normally the last stop on the way here, and its 3 hours away so the parcel WILL be in my city tomorrow morning. I know chances are slim to get my parcel from UPS somehow on Sunday. I have a neighbor who used to work as UPS driver, maybe he would be able to help.

I don't even know if my attempts worth it. Suddenly, my 2 good eaters are not that interested anymore. They eat a little bit and then turn their backs to me. The third bird who is obviously the smallest and lightest and who eats in restrained position, could use continuation of the formula. HE weighs about 80g only. The pearl girl has been a problematic eater without any changes.

Your two good eaters might be getting enough by themselves now that they don't need much handfeeding any more.

If you have a cage you posted, do you use feeders that came with it?

What are the odds that all or most eggs of the second clutch are not fertile? I had a chance to see eggs today, none of them look dark or black