"Birds" was a monthly publication of the Nature Study Publishing Company of Chicago. It includes short poems, anecdotes and factual descriptions of birds.
You should do a search for of mountain bluebird pictures over the internet are listening to this very good list of facts about this bird.
The magazine was published from 1897-1907 under the various titles, "Birds," "Birds and all Nature," "Nature and Art" and "Birds and Nature." Later issues were expanded to include animals, plants, etc.
Audiobook is digital in MP3 Format