I thought that these pictures of  American Robins feeding on raisins follows your theme on Urban Birds perfectly. I have been feeding Robins for the past 3 winters. It started with robins feeding on the berries of our Washington Hawthorn. As I noticed the berries being depleted I began taking berries and placing them on a small plastic table incorporating raisins with them. It was natural for the robins to consume the berries and try the raisins at the same time so when the berries ran out I continued to feed the raisins and have as many as 20 robins feeding 3 or 4 times daily.

The Hawthorn is gone due to Hurricane Ike winds,  but the raisins still work.  I believe birds from previous winters have returned for these life-sustaining fruits.

This is an amazing experience,  as these birds watch for me and fly down to greet me... almost landing on me when I go out to feed them!