I didn't read this thread until its relevance was brought to light in the other thread. It is background info.
By the OP's own post it was multiple males of the new group that were removed so not sure why she's changing her story now.
If I see someone neglecting a bird(s) (in this case by removing the males that would have fed the females or taken a turn on the nest so she could go eat), I will say something, whether it be the same day, a week later or whenever I happen to see the thread. I didn't realize there was a time limit on helpful information.
A real breeder would have known to remove the eggs to an incubator and then hand feed if one of the parents was not acting appropriately. Instead of leaving the female to try to hatch eggs and go hungry.
A real budgie breeder would know what a budgie is.
Actually (and I am not trying to put you down, I realize you were saying this out of concern for the birds but it begs clarification), you are wrong. Hens are perfectly capable of feeding themselves and raising the babies on their own without the male's help. They don't go hungry, they don't lose weight and the eggs don't get cold making the embryo die in the shell, either. Yes, most male birds would feed the hen while she is incubating but hens always get up in the morning and in the evening to eat, drink and, sometimes, they even take a bath (this depends on the species) before returning to the nest. You are 100% correct that the ideal situation is to have a mother that sits tight and a father that helps by feeding the female (and, in the case of tiels, even taking turns incubating them) and, later on, the babies, but nature is not as strict as all that, it always leaves a bit of leeway just in case there is an emergency, and many hens lose their mates for one reason or another and still incubate and raise the babies on their own. And, as long as the clutch is not huge and food is rich and nearby (and it's always rich and nearby in captivity), she can raise the hatchlings without a problem. It's a lot of work, but it's perfectly doable and, sometimes, as it was with this rogue male which was not behaving very fatherly, preferable to any other option (including putting the eggs in an incubator and hand-raising them from day one).
Having said that, tiels should not be breeding in the winter -but that's another issue for another thread.