Within a week of setting up a new bird feeder, birds will begin to show up. Especially in inclement weather, the feeder will likely be very busy. Watching the birds come and go - what a great rainy day activity!
http://www.birderslibrary.com/features/childrens-bird-books.htm The library may be the next stop on the bird-book outing. Reading stories about birds is a great way for a young birder to develop a relationship with the little creatures. What child doesn't enjoy a good story?