Frequency signatures: Red Assassin Bug to Red Swamp Crayfish
Each card gives a species’ behavioural archetype, its frequency — how often it commits effort and how long each commitment lasts — and a waveform tracing that rhythm.
Frequency signatures
Each waveform traces one species’ working rhythm — where it spends effort, and where it waits. 2,327 species, A–Z; showing 1,681–1,704.
Red Assassin Bug
Spongy Pads on the Forelegs
Creeping • Adhesive • Warned
That makes it a low-frequency system: slow, adhesive and protected by advertisement.
Red Bird-of-paradise
Canopy Display Platform
Rhythmic • Site-faithful • Performative
This makes the species a mid-frequency system: a rhythmic, site-centered performer whose biology is built around sustained, repeated ritual presence rather than single dramatic peaks or deep-conservation lows.
Red Crossbill
Cone-Crack Precision Bill
Rhythmic • Targeted • Foraging
Because their whole system is built around repeated, precise use of a specialized tool in regular foraging cycles, the red crossbill is a mid-frequency system with rhythmic, targeted activity rather than long dormancy or explosive bursts.
Red Deer
A Roar That Declares Body Size
Herded • Separate • Grazing
That makes it a bimodal system: separate herd grazing and a short, exhausting, largely acoustic contest.
Red Fox
The Edge-Line Opportunist
Patrolling • Listening • Caching
That makes it a bimodal system: a cheap, flexible search mode punctuated by short decisive strikes.
Red Handfish
Hand-Fins Walking a Tiny Reef Patch
Walking • Benthic • Localised
Because it is built on slow bottom walking in one small place, it is a low-frequency system.
Red Hartebeest
High-Shoulder Endurance Gait
Long-strided • Economical • Unstopping
Sustained repeatable output rather than any burst makes this a mid-frequency system.
Red Harvester Ant
Dryland Seed Logistics
Rhythmic • Foraging • Storage
The result is a mid-frequency system built on coordinated, repeatable work: not a single big burst, but steady, rhythmic collection that fills the granary before the ground turns empty.
Red Imported Fire Ant
One Gene Region, Two Colonies
A single queen founding alone • Workers killing any additional queen • Territories defended against neighbouring colonies
Applying the structural test, these are two colony architectures, making this a bimodal system.
Red Junglefowl
Alarm Calls With an Audience
Producing different alarm calls for aerial and ground predators • Calling far more when a hen is within earshot • Staying silent when alone or when only a rival male is present
Since encounters recur through the day, it operates as a mid-frequency system.
Red Kangaroo
The Elastic Recoil Strider
Rhythmic • Rebounding • Distance-covering
That makes the kangaroo a mid-frequency system: rhythmic, repeatable and efficient precisely because the pace does not change.
Red Kite
Search That Costs Almost Nothing
Riding lift • Scanning • Dropping on whatever appeared
Continuous daylight searching makes this a mid-frequency system.
Red Lady Beetle
Bleeding From the Joints
Pores at the leg joints from which the beetle can release droplets of its own haemolymph on demand • That fluid carrying bitter alkaloids that ants, birds and lizards reject immediately, and staining what it touches • The beetle recovering afterwards, so the defence costs fluid and alkaloid rather than the animal itself
Because discharges are occasional, it operates as a low-frequency system.
Red Lory
A Gut Too Short
A liquid nectar diet with very little bulk and almost no fibre • A short simple gut with rapid transit that extracts sugars and passes the rest through within an hour or two • No capacity to store a meal, so the bird must feed for much of the day and cannot go long without
Because the cycle repeats many times a day, it operates as a high-frequency system.
Red Palm Weevil
A Crown Eaten Inside
Adults boring into the crown of a palm and laying eggs inside the soft tissue at the growing point • Larvae tunnelling through that tissue in numbers, hollowing the crown while the fronds above remain green • The tree only showing symptoms when the crown collapses, by which point it is already dead and has been producing weevils for months
Because development runs over months, it operates as a low-frequency system.
Red Panda
False-Thumb Bamboo Handling
Bamboo-fed • Handling • Sedentary
Because intake is poor and everything is slowed to match, it is a low-frequency system.
Red Paper Wasp
An Open Comb, No Envelope
Chewing wood fibre into paper • Building a single uncovered comb on a stalk • Defending it with bodies rather than with a wall
Since the colony cycle runs through a season, it operates as a mid-frequency system.
Red River Hog
A Snout Disc Driven by the Neck
Rooting • Grouped • Turning soil
That makes it a mid-frequency system: steady collective excavation.
Red Salamander
Wearing Another Animal's Warning
Red • Borrowed • Cold-spring
That makes it a low-frequency system: slow, unarmed and defended by a resemblance rather than by anything it produces.
Red Sea Urchin
Armored Slow-Growth Grazer
Armored • Patient • Long-lived
Because nearly everything in this system favors durability, low daily output and very long time horizons rather than bursts or switching states, the Red Sea Urchin is a strongly low-frequency system built for patient survival across centuries.
Red Slender Loris
Nocturnal Branch Tester
Silent • Testing • Creeping
That makes the Red Slender Loris a bimodal system: a dominant low-frequency creeping mode structurally paired with essential high-frequency snatch movements.
Red Slug
Mucus as Glue and Oil
A mucus that behaves as a solid glue when undisturbed and as a liquid when sheared by the foot • Waves of muscular contraction passing along the foot, liquefying the mucus locally under each moving section • The rest of the animal held firmly in place by the same mucus while those sections advance, so it can climb vertical surfaces without sliding
Because the waves pass continuously, it operates as a mid-frequency system.
Red Squirrel
Caches Found by Smell, Not Memory
Caching • Scattered • Autumn
That makes it a bimodal system: a short intense storing phase and a long retrieving one.
Red Swamp Crayfish
Carrying a Disease It Survives
Carrying the oomycete Aphanomyces astaci in its cuticle while remaining healthy • Shedding spores continuously into any water it occupies • Killing native European crayfish that have no resistance while itself persisting and spreading
Because the spread runs across seasons, it operates as a low-frequency system.