When Sarah first introduced it to me a couple of weeks ago, the chicks were just (highly active) balls of fluff. Now their wings seem to be almost fully fledged and they have distinct parrot beaks. They keep trying to flex their wings and to (presumably) sharpen their beaks on the wooden walls of the nest, although their main activities continue to be standing on each other and wrestling :-) Yesterday I noticed their mum grooming them for the first time, and she seems to be spending much greater periods away from the nest now than she used to. They're not changing so much day-to-day as they were earlier, but I'm still finding it fascinating. I've never been able to watch a nest like this before and I'm loving it!
PS It seems to use very little bandwidth, so you can leave it on for long periods of time without chewing through your monthly allowance :-)