I have been seeing a number of questions come up that are more neuroscience related and are likely more appropriate for Cognitive Sciences SE.
I realize that this has come up before in this Biology Meta SE question (Redirect more people to Cognitive Sciences SE?), but it is now 1 year 8 months later and CSSE is likely more established.
Looking at their Area 51 Stats, it appears that the community is doing very well, but could use to up their daily number of questions. Having the ability to flag questions to redirect them to that site would help them get passed the Beta phase as well as give the questions a better chance of receiving a quality answer.
While there were a couple of posts rolled up in this discussion, this was the question in particular https://biology.stackexchange.com/questions/39914/can-anyone-see-what-is-wrong-with-this-implementation-of-the-pinsky-rinzel-model that prompted me to post this.
I understand the difference between questions that can be answered here and those that really should be there, and I think that the moderators understand that as well. It is sort of like this xkcd piece:
We have a flag to move to chemistry, so that either leaves us using the mod flag or just ignoring the question entirely. I don't think that is a good thing for either site or for the OP.