You can see one in the middle of the picture, I have to look for the english name for that species, I know the german one, but I guess, it might be useless for you.....
Nice exhibit looks as if they have a couple of birds in there too on the branch above the water dragon.
Yes, there are some Zebra Finches in here as well. (and thanks for bumping this, none of my photos inside the Exotarium came out well enough to post so this will fill that gap for anyone glancing through! )