Of course the clips are very short, and the livestream is very long (11 hours!) but it turns out there's not that much difference in the quality. Please note that I'm annotating the archived livestreams with the timings of the perching episodes so you can immediately jump to the interesting bits. So in fact much of the blurriness is simply due to the pixellation introduced by the digital zoom I'm forced to use because of the long distance from camera to perch. Please Fred, start using a closer perch!
If you use Chrome as your browser, you could also consider adding the "Youtube Playback Speed Control" extension. This is a marvelous gadget that enables speeded-up, up to 16X compared to the standard 2 X) playback of Youtube videos. If you use this on one of my 8-hour livestreams it rolls by in 30 minutes! Of course Fred's head jerks back and forth like a jackhammer, but don't worry it's not going to fall off! With this device I've discovered some very brief perching episodes that I cannot spot by simply scrubbing through the video, which might show only 1 frame every minute. Of course if you have not already done so you should also add the wonderful Adblock extension. Youtube without Adblock is hell.