Listen to some of these sounds of birds that are typically found in backyards of North America. Find a bird that you have heard in your backyard. Then, go to the Our Own Bird Sounds Database and add an entry completing as many of the fields in the entry as possible.

These recordings are from the Macaulay Library
Cornell Lab of Ornithology http://animalrecordings.org/pmd/EasternBYB/Voices_of_EasternBackyardBirds.pdf