"I have a 'dvd' of Smithsonian Field Guide to the Birds of North America. Birdsongs of 138 species.
Over 500 tracks listing the type of calls, ie courtship calls, flight calls etc.... a picture of each bird with the title…"
"I second Jimmy's recommendations for the merlin app. Its one of two that I use and has some great features including photo bird ID which I found very useful in Costa Rica. I use the bird pack " US Canada and all" as…"