I wanted to pass along a thank you to all who helped ID backyard birds for me these past few months. Since April, my 9-year-old son has been writing a nature guide to our backyard. He finally finished it this past weekend. It is hands down the most entertaining nature guide I've ever read, and it includes all 75 species of birds we have seen here, many of which were identified by the good people of this forum. Here is his sources/thank you list from the end of the book and an excerpt from his chapter on songbirds.