Frequency signatures: Spinner Dolphin to Spotted Nutcracker
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 1,969–1,992.
Spinner Dolphin
Rotating on the Long Axis in Mid-Air
Resting • Shallow • Half-asleep
That makes it a bimodal system: a shallow resting phase and a deep active one.
Spiny Devil Katydid
An Ear on the Leg Listening for Bats
Singing after dark • Falling silent • Spines if found
Nightly calling and feeding makes this a mid-frequency system.
Spiny Flower Mantis
Petal Lure Ambush
Still • Alluring • Hidden
Because its architecture depends on long, low-expenditure waiting powered by passive visual luring, punctuated by short, high-speed strikes when a narrow spatial trigger is met, the mantis operates as a bimodal system with a dominant low-frequency lure phase and a high-frequency ambush phase.
Spiny Hill Turtle
A Spiked Rim That Wears Down With Age
Litter-dwelling • Slow-foraging • Hidden
The system is a single low-frequency mode of slow, concealed progress.
Spiny Leaf Insect
Foliage Stillness Mimic
Hidden • Motionless • Matching
This makes it a low-frequency system: energy and motion are minimized, posture and camouflage are maintained continuously, and survival comes from patient matching to the surrounding foliage rather than bursts of activity.
Spiny Softshell Turtle
Streamlined Buried Sprinter
Buried • Patient • Hidden
Because both the patient concealment and the rapid sprint are structurally necessary to survive with a soft shell in exposed waters, this is a bimodal system with a low baseline and a defining high-frequency burst mode.
Spinybacked Orbweaver
Silk Tufts Marking the Web
Rebuilding an orb web daily across an open gap • Adding conspicuous tufts of white silk along the anchor lines • Sitting in the hub behind a hard spined abdomen
Since web maintenance is continuous, it operates as a mid-frequency system.
Splendid Fairywren
Seasonal Blue Moult
Helped • Moulting • Scrub-bound
That makes it a mid-frequency system: rhythmic and social, with a signal that is switched on seasonally rather than carried all year.
Splendid Garden Eel
Anchored Current Forager
Anchored • Scanning • Reactive
That anchored, rhythmic watch-and-feed pattern makes them a mid-frequency system built on rooted awareness.
Splendid Toadfish
Reef Crevice Display
Sheltered • Local • Revealing
That rhythm of staying put, working a small patch and revealing its brilliance only at short range is a mid-frequency pattern.
Spoon-billed Sandpiper
Spatulate Bill Surface Sweeping
Sweeping • Tidal • Most of the year
Because the tidal feeding and the compressed Arctic breeding are both essential and run at different rates, it is a bimodal system.
Spottail Mantis Shrimp
A Spear Thrown From Cover
Waiting at a burrow mouth in soft mud • Unfolding barbed raptorial appendages in milliseconds • Impaling soft prey and withdrawing underground
Since strikes happen in thousandths of a second, it operates as a high-frequency system.
Spotted Cuscus
A Tail That Works as a Fifth Hand
Slow • Anchored • Leaf-fed
That makes it a low-frequency system: slow, anchored and matched to a very low energy income.
Spotted Dove
Young Fed on Parent-Made Fluid
Producing crop milk in both sexes • Feeding chicks on it regardless of season • Breeding through most of the year
Since nesting attempts repeat within weeks, it operates as a mid-frequency system.
Spotted Eagle Ray
Reef-Wing Foraging Glide
Calm • Soaring • Patrol
The system depends on long stretches of efficient glide punctuated by coordinated, moderate-intensity feeding sequences rather than constant effort or explosive sprints, which makes this a bimodal low-and-mid frequency animal.
Spotted Gar
Scales Forming a Rigid Jacket
Diamond-shaped ganoid scales locked to one another by peg-and-socket joints • A hard enamel-like ganoine surface over a bone base across the whole body • A rigid casing that resists bite and puncture while allowing only limited flexion
Because strikes are infrequent, it operates as a low-frequency system.
Spotted Garden Eel
Anchored, Feeding on Current
Holding the tail in a mucus-lined burrow • Extending the body into the current and picking plankton • Withdrawing entirely when anything approaches
Since feeding picks recur constantly, it operates as a mid-frequency system.
Spotted Handfish
Walking Fish Needing Upright Egg Stalks
Walking • Egg-guarding • Estuarine
Because it is built on slow walking and long, stationary egg guarding, it is a low-frequency system.
Spotted Hyena
Acid Gut Behind Cracking Premolars
Travelling • Running down • Processing
Continuous travel, hunting and processing makes this a mid-frequency system.
Spotted Jellyfish
Sunlit Mouth-Arm Filter
Pulsing • Straining • Photosynthesising
Because the animal runs one uninterrupted pulse that is simultaneously its propulsion and its feeding, it operates as a mid-frequency system.
Spotted Lanternfish
Twilight Commuter with a Lit Belly
Deep • Dim • Waiting
That makes it a bimodal system: deep daytime waiting and a night-time feeding climb.
Spotted Lanternfly
Bark-Cryptic Flash Wings
Camouflaged • Clustered • Feeding
This makes the system bimodal: a dominant low-frequency mode of quiet, cryptic feeding on host plants, and a brief high-frequency mode of conspicuous wing-flash and escape that only activates under acute threat.
Spotted Linsang
Claws Kept Sheathed and Sharp
Nocturnal • Sheathed • Weightless
That makes it a low-frequency system: light, quiet and almost entirely undetected.
Spotted Nutcracker
A Mountain of Seeds Mapped in Memory
Harvesting • Carrying • Caching
The system is bimodal: an autumn harvesting mode and a long, slower recovery mode.