It is extremely rare, but it can happen if the older sibling can support the younger ones and the mother is confirmed, by the judge, as an unfit mother.
No, but the father can get the custody if he proves that the mother has bad habits like alcoholic or consume drugs.
Maybe, see links below.
Not necessarily. It depends on many factors which the judge will take into consideration before making a custody order.
If you are a father. You must prove the mother unfit, drugs, abuse, prison record, etc... IF you are a mother, depending on the state you live in they would allow soul custody because you are the mother. If the father is unfit and you live in Utah and/or California where they are for the father as well and want to do joint custody in most of those two states, the father must pretty much be unfit such as abuse, drugs and/or prison record for the mother to get full custody. That is pretty much when the only time I have known any parent to get full custody of their children.
Without knowing the jurisdiction difficult to say. In general, you'd need to prove the mother is unfit to have custody. This is a hard thing to do. Joint custody is more likely.
yess becaue she is not doing what she is supposed to so you will probly get it
If she is found to be unfit or addicted to drugs she could lose custody. Additionally, if she refuses to give the father visitation the judge could find her in contempt and change custody to the father.
An older sibling can take custody of younger sibling in South Carolina by applying for it if the current person taking care of them is abusing them or he/she is on drugs.
The same as any other way, through preparation. see link
You need to file an emergency change of custody with supervised visitation. see links below
believe it would be grounds to check into
It depends on local legislation