Outstanding field recordings of songs and calls of 60 species most common to eastern Warblers, Woodpeckers, Flycatchers, Thrushes, Larks, many more. 32-page booklet describes characteristics, song functions, song production. "Fidelity of sound as good or better than anything on the market today..." — Cincinnati Enquirer.
Donald Joyce Borror was a professor of entomology and zoology at Ohio State University. He founded the Borror Laboratory of Bioacoustics at the university, which houses one of the largest collections of recorded animal sounds in the world - it has more than 30,000 recordings of over 1400 species of animals.
As an entomologist and naturalist, he is known best as an expert on the order Odonata (dragonflies & damselflies), and for his book An Introduction to the Study of Insects.
I put this on to hear the 🐦 etc. outside freaking out. The 32-page booklet includes illustrations of each species and a paragraph or more detailing the birdsong (or birdcall) and something about the species. There are also spectrograms erroneously called spectrographs.