Frequency signatures: Sanderling to Sea Gooseberry
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 1,825–1,848.
Sanderling
Legs Timed to the Backwash
Running • Probing • Retreating
That makes it a bimodal system: rapid, rhythmic wave-edge feeding and tidal rests.
Sandhill Crane
V-form Calling Corridor
Rhythmic • Guided • Migrant
This makes the crane a bimodal system: a primarily mid-frequency, coordinated passage engine with a distinct high-frequency rally-and-evade mode layered on top.
Saola
Opened Maxillary Gland Marking
Marked • Solitary • Wet forest
Because the animal is slow, solitary and undemonstrative, it is a low-frequency system.
Sarcastic Fringehead
Gape Measured Mouth to Mouth
Hole-bound • Cheap • Rarely moving
A fixed shelter and minimal expenditure make this a single low-frequency system.
Sargassum Fish
Drifting Sargassum Mimic
Still • Blended • Ambush
That makes it a low-frequency system built around passive blending and rare, tightly-local ambushes rather than continuous movement.
Sarus Crane
Synchronized Trumpet Duet
Daily • Paired • Wetland-bound
Because the system runs on a repeated coordinated performance and continuous shared foraging rather than on reserves or bursts, it is a mid-frequency system.
Satanic Leaf-tailed Gecko
Notched-Edge Dead-Leaf Mimicry
Still • Notched • Daylight
Because the animal spends almost all its time doing nothing at all, it is a low-frequency system.
Satin Bowerbird
A Collection Kept in Blue
Building • Collecting • Maintaining
That makes it a mid-frequency system: continuous curation rather than any single performance.
Satin Flycatcher
Woodland Sally Pivot
Perched • Scanning • Ready
This dependence on a steady scanning perch state plus a repeated, very short, high-agility strike-and-return state makes the Satin Flycatcher a bimodal system with a mid-frequency baseline and high-frequency bursts.
Scalloped Hammerhead
Spread-Cephalofoil Field Sweep
Schooled • Circling • Daylight
Because both the schooling day and the solitary hunting night are essential, it is a bimodal system.
Scaly-foot Snail
Vent-Mineralised Iron Sclerites
Fed by bacteria • Enormous heart running • Plating itself in iron sulphide
Because the circulation and chemosynthesis run continuously at one unvarying rate, it operates as a mid-frequency system.
Scarlet Cleaner Shrimp
Striped Reef Service Station
Rhythmic • Signalled • Stationary
Activity follows a repeatable day–crevice–night shelter rhythm tied to the station, so the system is structured as a rhythmic mid-frequency service loop rather than a slow reserve store or a short explosive burst.
Scarlet Ibis
Curved Probe Inside the Mud
Probing • Sweeping under • Lifting
Steady repeated probing makes this a mid-frequency system.
Scarlet Macaw
Bound to a Few Clay Banks
Cracking hard seeds • Flying long routes • Gathering at a riverbank
Continuous daily flying and feeding makes this a mid-frequency system.
Scarlet Skimmer
Pointing the Abdomen at the Sun
Patrolling • Red • Contested
That makes it a bimodal system: active contested patrolling and a still thermal posture.
Scarlet Tiger Moth
Comfrey-Backed Red Hindwing Reveal
Feeding • Defended • Slow-growing
The backing is built slowly over months of caterpillar feeding and spent in a moment of display, and because those two stages work on such different timescales the moth is bimodal, pairing low-frequency preparation with a high-frequency flash.
Scarlet-rumped Cacique
A Voice Assembled From Other Birds
Vocal • Colonial • Borrowed
That makes it a mid-frequency system: continuously vocal, social and built on what has been picked up from elsewhere.
Scimitar-horned Oryx
Body Hot, Brain Cool
Allowing body temperature to rise through the day rather than sweating it away • Cooling arterial blood to the brain through a network in the nasal passages • Shedding the stored heat at night when the desert cools
Since the cycle is daily and generations are slow, it operates as a low-frequency system.
Scrawled Filefish
Mottled Reef-Match Body
Rhythmic • Terrain-tuned • Blending
This produces a mid-frequency system built on ongoing, terrain-matched adjustment: steady cycles of blend, probe, feed and pause, all written to the local reef pattern rather than to a single big burst or deep reserve.
Screaming Hairy Armadillo
A Scream From Under the Shell
Sniffing • Digging • Omnivorous
That makes it a bimodal system: steady scent-led foraging and brief, noisy escapes.
Sea Angel
Buoyant Winged Drifter
Weightless • Current-led • Hidden
This makes the system bimodal: a dominant low-frequency, current-led drift that preserves invisibility and energy, punctuated by short high-frequency capture bursts that are only triggered when a target is close enough to justify breaking the calm.
Sea Bunny Nudibranch
A Furred Back Tasting for Sponge
Crawling • Chemosensing • Sponge-grazing
The system is a single slow mode of scent-guided crawling and grazing.
Sea Butterfly
Pelagic Winged Shell
Rhythmic • Buoyant • Drifter
This makes the sea butterfly a mid-frequency system: it runs on ongoing, rhythmic activity that tracks a moving environment rather than on heavy reserves or explosive bursts.
Sea Gooseberry
Ciliary Prism Drifter
Gentle • Continuous • Drifting
This makes the sea gooseberry a low-frequency system: soft, continuous expenditure that lets movement, light and capture all ride on the same calm rhythm.