Wow, what a wonderful thread this is. I love birds and it is just so fascinating to watch them. I just moved in March from a ground floor condo with a woods view to a 5th floor retirement apartment with two tiny balconies. I'm in the process of trying to figure out how to attract birds. I've never had anything so elaborate as you two, but I dearly love my little house wrens and the hummingbirds. I figure I have about a month to get some plants in and find a bird bath that doesn't take too much space. There are lots of tall trees near the building and I think that's a plus.
Meanwhile, I really enjoyed reading about your birds and since I know there is an appreciative audience here, I thought I'd share this video sent to me last week.
An epic chase caught on film, a squirrel star is born from The Washington Post
http://wapo.st/1clVpCT
This is a fascinating peek at the extraordinary world of a grey squirrel. Spectacular!