As of October 7, 2026, your apiary continues its recovery from the starvation event you diagnosed and addressed this weekend — all three inspected hives are warming, and the telemetry confirms your intervention is working. The outstanding item is your Iris hive: no inspection log yet, stores status unknown, and a sustained multi-week temperature below the brood band warrants a heft and a look at your next visit.
Across all four hives, the deconfounded gas resistance vs. in-hive temperature correlation (r = −0.68 to −0.82) reflects a well-established MOX sensor principle: as colony metabolic activity rises with feeding-driven warming, brood pheromones, honey processing, and fanning all increase the reducing-VOC load and drive resistance downward — a healthy sign of biological reactivation, not distress (Seeley 1974; Maisonnasse et al. 2010).
Outdoor conditions are mild and settling (54–76°F / 12–24°C, humidity 25–57%, barometer easing slightly higher at +0.59 hPa/3h — a gentle clearing trend); all four hives show consistent daily vibration peaks 1.5–2.7× their own baselines, marking normal October foraging and fanning rhythms, and the Apimaye poly enclosures continue to compress the outdoor swing to a fraction inside each box.
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Iris warning Score: 66/100📋 Overall Health
Your Iris hive is acoustically the most active colony in the apiary — every sound band is running +4.7 to +11.4 dB above its own all-time baseline (dominant band 420–500 Hz at −9.4 dB avg), and the 14-day temperature trend has now reversed upward to 86.2°F (30.1°C) from 79.0°F (26.1°C), a genuine +7.1°F (+4.0°C) warming over the past two weeks. No inspection log exists for Iris unlike the other three hives, so stores status remains unconfirmed — the thermal picture still sits below the 93–97°F (34–36°C) brood band and stores should be verified on your next visit. Humidity is a healthy 66.2% avg, vibration kurtosis is normal at 2.7, and the battery is stable at 4,014 mV.
🌅 Diurnal Cycle PatternsIris shows an +8.9°F (+4.9°C) avg daily temperature oscillation with a clear warm offset of ~26°F (~14°C) above the outdoor low — damping is fully retained, confirming active heat production. The sound spectrum's strongest daily rhythm is in the 1500–3600 Hz band (16.9 dB swing), with all 10 bands cycling; notably the 1500–3600 Hz rhythm is weakening while the 100–150 Hz rhythm is strengthening — consistent with a shift toward lower-frequency fanning and clustering activity as October cools. Vibration daily rhythm shifted from 50–80 Hz to 5–20 Hz between the first and second half of the window, worth tracking but not yet anomalous. Gas heater-scan shows the strongest daily rhythm at the 100°C step (+24% swing), with all 10 steps cycling — the overall curve shape (high resistance at low plate temps, gradual slope downward) is consistent with this hive's own history; the 320°C reference at ~358 kΩ is modestly below the all-time avg of ~422 kΩ, likely reflecting the combined VOC load of syrup processing and brood pheromones from the ongoing recovery.
🔬 Correlations & Discoveriessound_spectrum_420_500hz vs sound_spectrum_500_600hz vs temperature (14d) | r = +0.7The strong partial correlation between sound energy and in-hive temperature (r=+0.70, weather-controlled) reflects the well-documented link between heater-bee metabolic activity and colony acoustic output — warmer cores require more fanning and metabolic effort, both of which register acoustically. The broadband elevation across all bands (+4.7 to +11.4 dB vs. this hive's own baseline), with the 420–500 Hz and 500–600 Hz bands most elevated, is consistent with an active, populous colony processing syrup and warming toward brood-rearing range; the 171-hour sound baseline is still maturing (reset on 2026-09-30), so these levels represent Iris's new starting point only and no trend comparison to earlier data is valid.📚 Reference: Ramsey et al. 2020, Sci. Rep. 10:9798, Maisonnasse et al. 2010, PLoS ONE 5(10):e13531, Stabentheiner et al. 2010, PLoS ONE 5(1):e8967⚠️ Issue: Brood temperature averaging 86.2°F (30.1°C) — holds a strong warm offset above outdoor, damping retained, but remains below the 93–97°F (34–36°C) brood-incubation band for several weeks; no voice log or inspection for Iris this weekend means stores status is unconfirmed.▹ Action: On your next routine visit, heft Iris and confirm capped honey stores — unlike Hive #1, #2, and #3, this hive was not inspected this weekend and the apiary-wide starvation context means stores should be verified before assuming a natural brood break; if light, feed 2:1 sugar syrup toward a solid autumn target.▹ Action: While visiting, check for capped brood and a laying queen — the strong broadband acoustic signature suggests an active population, and confirming brood status will clarify whether Iris is simply in a requeening gap or needs additional support. -
Hive #2 healthy Score: 72/100📋 Overall Health
Your Hive #2 is continuing its feeding recovery exactly as your notes described — you confirmed all stores cleaned out, fed sugar water and saw an immediate temperature step-up, then followed with 1 lb HiveAlive sugar and a 1 lb pollen patty; the 14-day warming trend from 70.6°F (21.4°C) to 86.6°F (30.3°C) is a direct telemetry reflection of your intervention. The sensor was out of the hive for ~17 hours on October 3–4 (noted); today's figures cover only the period since reinstallation, and the sound baseline rests on just 60 hours — treat acoustic readings as a fresh starting point only, with no trend comparisons valid yet. Humidity is healthy at 58.3% avg, vibration kurtosis is normal at 2.9, and the battery is stable at 4,018 mV.
🌅 Diurnal Cycle PatternsHive #2 shows a +6.7°F (+3.7°C) avg daily temperature oscillation with a warm offset of ~30°F (~17°C) above the outdoor low — damping fully retained and improving. The sound spectrum is stable against this hive's own (post-reset) baseline, with all 10 bands within +0.9 to +1.7 dB of historical norms; the dominant rhythm band shifted from 600–800 Hz to 500–600 Hz, and both the 200–260 Hz and 420–500 Hz rhythm strengths are weakening slightly — consistent with normal October settling rather than a colony event. Vibration daily rhythm is the most pronounced in the apiary (avg 2.7× daily peaks), with the dominant rhythm band shifting from 120–160 Hz to 160–200 Hz, suggesting increasing fanning effort during the warmer parts of the day as syrup is processed. Gas heater-scan shows the strongest daily rhythm at the 280°C step (+30% swing), and the low-temperature steps (100°C, 150°C, 200°C) show band energy declines of 22–29% — a shift in the curve shape indicating the VOC mix is changing, most likely as the initial syrup-processing VOC pulse settles; gas resistance at ~41.8 kΩ is near the all-time avg of ~51.2 kΩ and consistent with active colony processing.
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = -0.68The deconfounded inverse correlation between in-hive temperature and gas resistance (r=−0.68, p<0.001) captures the metabolic reactivation signature of a colony recovering from starvation: as the bees resumed heating and syrup processing after your October 4 feeding, brood pheromones (E-β-ocimene), fanning-circulated volatiles, and honey-ripening esters all increased, driving MOX resistance downward in tandem with the thermal rise — a healthy, expected relationship fully consistent with your beekeeper logs.📚 Reference: Maisonnasse et al. 2009, Apidologie 40:562, Seeley 1974, J. Insect Physiol. 20:2301, Meikle & Weiss 2025, Sci. Rep. 15:22042▹ Action: Continue feeding Hive #2 toward a solid autumn stores target (aim for at least two full deep combs of capped honey) — the colony started from empty comb and the current warmth is fuel-driven; feed by weight toward the target, not by dose.▹ Action: Watch the temperature mean over the next 5–7 days: if it continues climbing toward 93–97°F (34–36°C), brood rearing is resuming on schedule; if it plateaus or slips back with the daily swing still tight, that is a relapse signal — feed again promptly. -
Hive #1 healthy Score: 75/100📋 Overall Health
Your Hive #1 mirrors the recovery story you described — you confirmed all stores cleaned out down to one deep of bees, fed sugar water and saw an immediate step-up, then added 1 lb HiveAlive sugar and a 1 lb pollen patty; the 14-day warming trend from 77.6°F (25.3°C) to 88.9°F (31.6°C) confirms the colony is responding well. Today's 24h average of 88.9°F (31.6°C) is +6.9°F (+3.9°C) above the all-time average of 82.0°F (27.8°C), holding a warm offset of ~29°F (~16°C) above the outdoor low. The sensor was out for ~17 hours on October 3–4 (noted); sound baseline rests on 60 hours only — treat acoustics as a fresh starting point. Humidity is at 49.0% avg (the dry end of the healthy 50–70% range but expected given the screened floor and low ambient humidity of 37%); vibration kurtosis is normal at 2.9, battery is strong at 4,156 mV.
🌅 Diurnal Cycle PatternsHive #1 shows the tightest daily temperature oscillation in the apiary at just +3.6°F (+2.0°C) avg — a sign of the most stable thermal regulation among the three recovering hives, consistent with the most brood or the most active cluster. Sound spectrum is essentially flat against its own baseline (all bands within −0.2 to −1.4 dB of historical norms — well within noise), with the dominant energy in the 200–260 Hz band (−18.5 dB), which aligns with normal colony hum. Vibration daily rhythm shows 14 of 15 days with a clear peak (avg 1.5× baseline), and the dominant rhythm band shifted from 5–20 Hz to 20–50 Hz between the first and second half — a minor shift worth noting; vibration peak frequency is 65 Hz, sitting squarely in the colony metabolic baseline band. Gas heater-scan dominant rhythm shifted from the 100°C step to the 200°C step, and the 150°C and 320°C rhythm strengths are weakening — suggesting the early post-feeding VOC pulse (heaviest volatiles at low plate temps) is settling, which is a healthy sign of syrup stabilisation.
🔬 Correlations & Discoveriesgas_resistance vs temperature vs humidity (14d) | r = -0.83The strong partial correlation between gas resistance and in-hive temperature, controlling for outdoor weather (r=−0.83), reflects the dual mechanism of syrup-processing volatiles and brood pheromone release both rising with colony thermal recovery — the in-hive humidity partial correlation with temperature (r=+0.38) further shows that as the cluster warms and fans syrup, absolute moisture rises, which also modestly depresses MOX resistance via water-vapor competition at the sensing plate; together these channels tell a coherent story of a colony that went from energy-starved to actively metabolising.📚 Reference: Burgues & Marco 2018, Sensors 18(2):339, Maisonnasse et al. 2010, PLoS ONE 5(10):e13531, Eouzan et al. 2019, PLOS ONE PMC6368279▹ Action: Continue feeding Hive #1 toward a full autumn stores target — two full deep combs of capped honey is the goal; the current warmth is fuel-driven and the colony started from bare comb, so sustain bulk 2:1 sugar feeding.▹ Action: Keep the carbohydrate supply ahead of the pollen patty you added — protein stimulates brood rearing at 95°F (35°C), which is the most energy-expensive thing a cluster does, so watch the temperature mean for a relapse dip and feed promptly if it slides back. -
Hive #3 healthy Score: 74/100📋 Overall Health
Your Hive #3 is the thermal leader of the recovering hives — your notes confirm you removed unused boxes, fed sugar water, then added 1 lb HiveAlive sugar and a 1 lb pollen patty; the change-point of +9.1°F around October 3 aligns precisely with that feeding, and today's 24h average of 89.8°F (32.1°C) is +9.1°F (+5.1°C) above the all-time average of 80.7°F (27.0°C), the closest of any hive to the 93–97°F (34–36°C) brood band. The sensor was out for ~17 hours on October 3–4 (noted); sound baseline rests on 61 hours only — treat acoustics as a fresh starting point. Humidity is healthy at 53.9% avg, vibration kurtosis is normal at 2.7, and battery is stable at 3,996 mV.
🌅 Diurnal Cycle PatternsHive #3 shows the widest daily temperature oscillation in the apiary at +8.4°F (+4.6°C) avg, reaching a peak of 95.4°F (35.2°C) — touching the top of the brood band — before settling back; this is consistent with a colony actively ramping up brood rearing and fanning syrup, with the sensor in box 2 of 2 sampling a zone that swings more than the deep brood core. Sound spectrum is shifted −2.4 to −4.2 dB vs. its own baseline across most bands (max deviation −4.2 dB at 800–1500 Hz), just below the ±5 dB threshold for a flagged anomaly — the second half of the day shows rising energy in most bands (+1.0 to +1.8 dB), consistent with afternoon foraging and fanning activity. Gas heater-scan shows a striking 100°C step strengthening (+83% to +171% swing), with the low-temperature steps (100°C, 150°C) showing a +17–14% band energy rise — the low-plate-temp MOX response is most sensitive to heavier volatiles and is strongly humidity-influenced; with the outdoor humidity range running 25–57%, the tightening low-step amplitude likely reflects syrup processing and propolis chemistry rather than a pathological signal, and no corroborating temperature or acoustic anomaly exists. Vibration dominant rhythm shifted from 5–20 Hz to 20–50 Hz, and the overall vibration level (avg 0.0212 g, peak 0.0355 g) is the highest in the apiary — consistent with the most active fanning and foraging effort.
🔬 Correlations & Discoveriestemperature vs gas_resistance vs humidity (14d) | r = -0.69The deconfounded temperature vs. gas resistance correlation (r=−0.69) and the in-hive humidity vs. gas resistance correlation (r=−0.55) together reflect the syrup-processing and brood-pheromone reactivation signature: as colony temperature rose after your October 3 feeding, both metabolic VOC output (brood pheromones, fanning-circulated esters) and evaporative moisture from syrup processing increased, jointly driving MOX resistance downward — the outdoor-temperature vs. battery correlation (r=+0.56) is a straightforward solar-charging effect and not a colony signal.📚 Reference: Maisonnasse et al. 2010, PLoS ONE 5(10):e13531, Bencsik et al. 2023, Sensors 23:3588, Meikle & Weiss 2025, Sci. Rep. 15:22042▹ Action: Continue feeding Hive #3 toward a full autumn stores target — it started from empty combs and the pollen patty will stimulate brood rearing, so keep bulk 2:1 sugar supply ahead of that demand; feed by weight toward at least two full deep combs of capped honey.▹ Action: The battery at 3,996 mV has stabilised since yesterday — no action needed, but if it dips below ~3,960 mV again over the next few days, check the solar connection on your next visit.