I've been busy with work commitments and finally got back to the Riverside nest this evening.
The Riverside eyasses have grown a lot bigger in just a few days. The two eyasses are hard to see together, but I definitely saw two today. (In the videos second section you'll see a beak down at the butt of the eyass in the foreground for about half a second.)
I like watching eyasses at this stage. They're big and active enough to get good glimpses, yet they're still really cute and fluffy.