Yeah - always it can make your day (if it happens!)!
I don't understand what exactly do you mean with the spots in the iris? I personally don't think the iridology is scientifically proven method even for humans (only where it's attempted so far as I know...) forget animals... For the humans they claim that that brown spots are connected with some liver problems...
The birds around there are OK (I just didn't find anything interesting that day!) and abundant. I don't believe these few (3-4) cats there are in need to catch a birds for a meal - always there is somebody feeding them when I pass around and they look pretty healthy (and lazy

!).