Extremely helpful resource when getting serious about bird sound ID! Teaches you the jargon associated with bird vocalization analysis as well as helpful tips and tricks.
Very helpful resource for the serious birders out there. Very helpful when identifying birds by sound using spectrograms. Also has a great index that helps you match certain spectrogram shapes to specific species. Eastern version contains every species included in the project so far.
Western version of the previous book. Not every bird from our project can be found in this field guide, but birders from Western North America may still enjoy it!