The Archive

Discoveries

Field notes & findings

Recent observations from keepers across every region of Esterasul.

Recent Field Notes

Discoveries are added as the archive grows — new behaviours, crossings between clans, and details worth recording for future keepers.

Field Note · Marrowfen

The Marrowfen Migration

Tracking confirms a seasonal migration route linking Marsh clans to the Hollow Peaks foothills each autumn.

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A season of tracking has confirmed what several older field notes only hinted at: Marsh clans follow a consistent seasonal route each autumn, moving from the Marrowfen up into the Hollow Peaks foothills before the first frost. The timing lines up closely with the root vegetable bloom that both Marsh and Mountain clans rely on through the colder months.

It's still unclear whether this is a recent behaviour or a very old one that simply hadn't been documented until now — a question the next field season hopes to answer.

Field Note · Emberwood

Crown Growth Rates

New measurements suggest horn crowns thicken noticeably faster in the year following an unusually harsh winter.

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Measurements taken across three Forest clans this spring show crown growth running well ahead of the archive's previous averages, following an unusually harsh winter the year before. The leading theory is that scarcity itself triggers faster growth, though the mechanism isn't yet understood.

If the pattern holds across other regions, it would suggest crown growth is far more responsive to environmental stress than previously assumed, and worth tracking after every harsh season going forward.

Field Note · Glassfrost

The Glassfrost Vocal Range

Tundra Radrians produce a low resonant call rarely recorded in any other population, audible across several miles of open ice.

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A recording expedition to the Glassfrost this winter captured a Tundra Radrian call audible from nearly three miles away across open ice — far beyond what's been documented for any other subspecies. The call appears to rely on the enlarged vocal chamber unique to Tundra populations.

Whether the call serves primarily as a migration coordination signal or a predator warning against Frostfang Wolves is still being debated, and may well be both depending on context.

Field Note · Emberwood

Shared Shelter Behaviour

Szałasy shelters appear to be rebuilt on the same foundations for generations, clan after clan, treating the site as an heirloom.

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Excavation notes from an abandoned Forest clan site show at least four distinct rebuilding layers on the exact same foundation, spanning what's estimated to be well over a century. This supports the long-standing belief that szałasy sites are treated as inherited ground rather than simply convenient shelter locations.

Similar layered foundations have since been reported at two more sites, suggesting this is standard practice across Forest clans rather than an isolated case.

Field Note · Sunreach

Mixed-Heritage Crowns

Border clans near the Sunreach Dunes show horn shapes blending Coastal spirals with Sunreach points, supporting mixed-heritage lineage.

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Several individuals observed along the salt-cliff border between Coastal and Sunreach territory show crowns that blend traits from both subspecies — the smooth spiral curve typical of Coastal clans combined with the taller, narrower points of Sunreach lineage.

This is the clearest physical evidence yet of regular intermixing between the two populations, consistent with how often Coastal clans migrate along that same stretch of shoreline.

Field Note · Marrowfen

Glimmermoth Calendar Use

Marsh clans appear to time seasonal rites to Glimmermoth swarms, suggesting the insects double as an informal calendar.

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Observation over two full seasons shows Marsh clans consistently timing at least three seasonal rites to the first major Glimmermoth swarm of the year, rather than to any fixed calendar date. Swarm timing does shift slightly year to year, and clan behaviour shifts with it.

This suggests the Glimmermoth functions as a kind of living calendar for Marsh clans, a role no other regional fauna appears to fill for any other subspecies.