Umm.. Well. Can't say I've noticed my buttons blinking at med :P But in general, if an animal blinks at you, it would suggest it's calm and relaxed. So that's my best guess.
Bad button quail mom? - Page 2
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Some people say quail are stupid. Personally I find my buttons are very attentive to their surroundings and they seem to have good memories. But I'm not sure they'd realise on the first try that they had to walk around a mesh fence placed between them and a treat (which is one way to assess how 'smart' an animal is). I'm tempted to try it though, just to know ^^
I usually separate them when it's getting hard to tell mom from the female chicks, which - for my wild colored buttons - is around 6 weeks, as far as I remember. So 8 weeks should be just fine. Though, if mom and dad haven't been right next to each other while separated, I'd probably put them next to each other for a week or so before reintroducing them, so they get used to each others presence first.