main jet dragon ""'ethnic groups"" and the major migratory routes they correspond to. i haven't gotten the exact geological features down because i have to figure out rain shadows and tectonic plates and uuuuugggghhhhh
subspecies are colour-coded (naval in blue, aerial in red). these are mostly equivalent to the concept of human ethnicities so there is a ton of individual variation between the shown traits and any one individual might have features from multiple areas
hybridization is weird too and i will likely draw a chart. arctic loop subspecies are most genetically similar ++ many of them have hybrid ancestors, central loop subspecies have a fairly high interflow, and dual loop subspecies are the most genetically distinct from each other. individuals from the same migratory loop also tend to be genetically closer to each other than a different-subspecies individual from a different migration loop. what this means in practice is that central and arctic hybrids are pretty common and commonly viable, dual loop and arctic/central (one parent from each loop) hybrids are usually viable but not very common, and hybrids between someone with mostly dual loop heritage and someone with either arctic and/or central heritage have a notable (still fairly small mind you) chance to not be viable
the central migration loop is the most stable and predictable in terms of volcanic activity and i'm fairly certain the volcanoes forming the main migratory path are actually not exactly on the edges of tectonic plates. either ways eruptions are relatively infrequent and lava flows are fairly slow (most similar to pahoehoe flows on earth). population is adapted for flying relatively long distances at relatively leisurely speeds.
arctic loop is effectively permanently a cold front. volcanic activity up there isn't usually that destructive, though it's more frequent than the central loop. populations here are designed for high agility rather than speed because being able to keep control in the high winds + turbulence of the area is a lot more important. also the migration loop with the highest rate of hybridization; due to general weather conditions and low volcanic risk both subspecies live much more similar lifestyles in this area and come into contact/form groups with each other much more frequently
eastern dual loop is actually where the species originally came from. they spread to the western dual loop pretty early on though. there is a lot of intermingling between these two routes as well, but due to the conditions, the two subspecies here are the most distinct from each other (societally and biologically).
east dual loop is located near a three-way tectonic intersection. volcanic activity is slightly infrequent but comes with very little warning and is highly destructive. population there is designed to fly very fast in comparatively short bursts, and spend a relatively high amount of time on the ground or sea
west dual loop is about as unpredictable, but less destructive and more frequent instead. somewhat similar conditions to the real-world ring of fire. population is adapted for a lot of stop-and-go and also flying pretty fast
