The term dragonborn is used as general identifier for several distinct subspecies of larger reptilian humanoids. The groups range from serpentine in appearance to a size and appearance more akin to their collective namesake. Their global population shrank considerably between antiquity and the modern era for various reasons. One distinct decline can be attributed to the colonization of the Americas.
Throughout South America and the southern portions of North America dragonborn were revered by many of the indigenous humans and kenku as gods or god-kings. Many acted as leaders throughout these regions acting as formal sovereigns for many generations. Smaller groupings existed throughout the American Midwest, being singularly fit to survive the otherwise harsh conditions that dissuaded the few other indigenous species from area.
European colonization lead to many wars that dwindled the numbers of the native dragonborn. This trend continued until the present day, leaving the dragonborn a scarcely seen sight outside of their redistributed homelands.
Pacific-Asian groups of dragonborn are also known to exist. Though mostly small in number, these somewhat simplified cultures live in relative peace with other indigenous peoples, primarily humans. Having never been of particularly large number, their groups now surpass the once considerable American colonies of dragonborn.
Given their remote origins, dragonborn are a particularly rare sight in Great Britain. Popular folklore suggests there may at one time have been a group within ancient Albion, but their numbers were reduced to zero by human and elven efforts. No conclusive historical evidence exists that supports this claim, though. These popular myths tend to lead to the few dragonborn existing on the islands of the United Kingdom having to deal with some level of ostracism from higher classes. Small children are especially known to sing nursery rhymes of man and elf slaying dragons to taunt dragonborn.
Though rare there are some notable dragonborn given distinction for their service in BCAIM.