For the second day in a row the strongest fledgling in the aviary has escaped from the nest and had a bit of a run/fly around the floor.  This seems to cause the parent finches no end of distress and in both cases we have returned the truant finch to the nest.

Truant fledgling Zebra Finch (note the grey beak)

So in summary:

• 4 fledgling Zebra Finches in the pot plant in the aviary;
• No news regarding the nest and eggs in the smaller cage (I am starting to suspect they are too young).