If you are doing a project for which it would be useful to see bilingual data, you might take a look at what is in TalkBank. It’s operated much like the CHILDES database, except not so child-centric. There is some bilingual acquisition data in CHILDES itself, but it’s worth taking a look at TalkBank too. For the most part, whatever techniques you would have used on CHILDES will also work on TalkBank.