I will assume that the birds were most likely not handfed.You can always try,but most grown birds that were not handfed,or handled alot when they were young will ever tame down.When my birds have young ones,i let them raise them.But,when they turn 2 weeks old i start to handle them about 10 minutes a day till they are grown. They usually are very tame by the time they are weaned.You can give it a shot,but i'am being real honest with you so that you will not be too disapointed if they don't tame.I have had birds for many years and have had little success taming grown birds that haven't been handled as youngsters.If you have the time,and i mean ALOT of time you might get them some what tame.Search the web for more information,there are plenty of parakeet websites out there.Take care.Good luck.