This is a work of popular natural history and folklore, likely an early 20th-century survey chapter, examining the mythology, superstition, and folk belief surrounding birds across ancient and pre-modern cultures. Its core content catalogs how various societies—primarily Roman, Etruscan, Welsh, and broadly European—attributed supernatural significance to birds, ranging from the formal Roman institution of augury (divination by bird behavior) to local legends explaining the robin's red breast and the extraordinary medieval belief that barnacle geese were born from shellfish. A distinctive thread running through the piece is the author's rationalist framing: they open by arguing that birds' genuine sensitivity to atmospheric changes provides a natural explanation for why ancient peoples attributed prophetic powers to them, treating superstition as a misinterpretation of real phenomena. The text moves methodically from serious civic institutions (Rome's college of augurs, with detailed procedure and notable historical anecdotes) through folk customs and legends to purely mythical creatures like the phoenix and the roc, quoting classical sources such as Pliny throughout. The author maintains a tone of bemused scholarly distance—describing alectromancy (divination by a mutilated white cockerel) as "peculiarly senseless"—while treating the material as genuinely worth documenting. It would interest readers curious about the history of ornithology, classical Roman religion, or the cultural roots of common European folk beliefs about specific birds.