One of my favorite tasks back in my days of serious gardening was feeding the birds and sitting back to enjoy their antics. In addition to the birdbath fountain with running water, I set up tables with real dishes for them . . . build it and they will come!
Watching birds is so interesting as they have definite social patterns that you will recognize after watching them for a while. It is a very relaxing pastime in the garden!
If you want to attract birds to your garden, check this article out from Birds and Blooms.