1. What the Slices Show

Compared to my structural baseline:

there are no spikes in the baseline
the baseline is smooth and continuous
the harmonic ladder is uninterrupted
the midband is calm and even
the fundamental is steady and unbroken

My baseline shows a calm, unified colony. These slices show distress signals.

2. How It Deviates From My Current Reference Hive (6 June)

4. How I Detect It Instantly Now

3. What I Missed at the Time

Back in April, I interpreted these spikes as:

“wind hitting the mic”
“someone bumped the hive”
“just a bee landing near the recorder”
“normal background noise”

But now I know:

These were distress calls. The colony was signaling irritation, discomfort, or internal stress.

I use this rule:

If I see short, sharp vertical spikes that don’t fit the harmonic structure — the hive is agitated.

Healthy hives do not produce random bursts. Agitation bursts mean something is wrong.

5. Diagnostic Meaning

Agitation Bursts indicate:

behavioural stress
irritation or discomfort
internal disturbance
early warning of deeper issues
often the first sign in a decline arc

This is the seventh detectable acoustic sign in my varroa‑driven decline — and often the earliest behavioural clue.

This sign is now part of my Early Detection Manual.

Agitation bursts appear as:

short, vertical spikes
sudden, sharp flares
isolated bursts of energy
non‑patterned, non‑harmonic events
clusters of micro‑spikes

They do not align with the harmonic ladder. They do not follow the hive’s rhythm. They are interruptions, not part of the structure.

Agitation flicks usually appear in the harmonic bands, where small vertical bursts of restless energy span more than one layer. Single‑band flickers in the midband are normal hive behaviour, not agitation.

This is the acoustic signature of behavioural stress.

Current Baseline Slice - 6 June

DETECTION SIGN 7 — Agitation Bursts

Representative Slice: Early April & Stress Points — Behavioural Distress

When I look back at these slices from early April and the later stress window, I can see the short, sharp spikes that appeared before any structural signs showed up. At the time, I thought they were “random noise” or “brief spikes,” but now I recognise them as the bees signallng distress.