How long do you keep baby hamsters with the mom and how long is the gestation period for a Dwarf hamster?

We just had and unexpected litter of hamsters they are at least 2 weeks old.How long do they need to be in the same cage as mom?They are eating regular food and drinking water and running up and down the ladders of the cage.
Also how long is the gestation period for the momma?We didnt get the daddy out of the cage until at least 2 days after we noticed the babies.We believe the momma may be pregnant again she has gotten very big , the first batch of babies are 2 weeks old.How old are they when they start to mate?

How long does it take parakeets to settle down after you bring them home?

I bought 3 parakeets about 2 1/2 weeks ago. I then went back a week later and bought another female and she is very wild. The first three were begininng to settle down until I brought the 4th one home. Now they are all very skiddish. Will they ever settle down? I spend as much time as I can talking to them and singing to them. I have one that will sit on my shoulder and let me walk with her but the minute I sit down she flies off. Will they ever settle down?

How long do parakeets usually stay in a pet store?

I want to get parakeets(budgies) but I want to know how long they usually stay in a petco.
Also I want to know how old they are when you buy them.