AnimalDex
Animal Frequencies

Frequency signatures: Oriental Magpie-Robin to Pacific Spiny Lumpsucker

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 1.513–1.536.

Oriental Magpie-Robin

MID

A Song That Holds the Garden

Singing • Perched • Territorial

That makes it a mid-frequency system: steady, sustained and carried entirely by signal.

Oriental Pied Hornbill

MID

Mud-Sealed Nest Slit

Provisioning • Enclosed • Sustained

That makes it a mid-frequency system: rhythmic, sustained and defined by continuous provisioning rather than by any burst of effort.

Orinoco Mata Mata Turtle

LOW

A Mouth Opening Into Vacuum

Sitting motionless on the bottom with a flattened fringed head that reads as leaf litter • Expanding the throat explosively when a fish comes within range • Drawing prey in on the inrush of water rather than by any pursuit

Because the capture is rare and the animal is otherwise still, it operates as a low-frequency system.

Ornate Box Turtle

LOW

A Life That Assumes Adults Never Die

Foraging slowly • Closing the shell • Repeating for decades

Slow, conservative and reserve-based throughout, this is a low-frequency system.

Ornate Ghost Pipefish

LOW

Suspended Reef Silhouette

Still • Suspended • Blending

Because their whole system is built around low-movement hovering, precise camouflage, and patient, place-bound feeding, the ornate ghost pipefish is a low-frequency animal whose survival depends on quiet continuity rather than bursts.

Ornate Horned Frog

LOW

Buried Mouth, One Bite

Sunk • Patterned • Costing nothing

A near-zero baseline paying for a strike with no duration makes this a bimodal system, low-frequency in the ground and high-frequency at the mouth.

Ornate Spiny Lobster

LOW

A Migration With No Return

Growing on shallow reef and seagrass in the Torres Strait • Migrating hundreds of kilometres to spawning grounds in the Gulf of Papua • Spawning there and dying rather than returning

Since the cycle runs annually, it operates as a low-frequency system.

Ornate Spiny-tailed Lizard

MID

Throwing Away the Plants' Salt

A diet of desert plants carrying far more potassium and sodium salts than the body can use • Nasal glands actively concentrating those salts and excreting them as crystals • Crusts of salt accumulating around the nostrils and being sneezed away, so water is not spent flushing them through the kidney

Because the cycle is daily, it operates as a mid-frequency system.

Oscar Fish

MID

Cleared-Substrate Pair Defence

Moving gravel with the mouth • Clearing a flat surface • Guarding it as a pair

Since that operation runs at a steady tempo, it operates as a mid-frequency system.

Osprey

MID

Reversible Toe and Spined Sole

Quartering • Scanning • Circling

That makes it a bimodal system: patient wide searching and a rare total commitment.

Ostrich

MID

Two-Toed Stride Engine

Striding • Sustained • Open-ground

That makes the ostrich a mid-frequency system: rhythmic, sustained and organised around covering ground efficiently rather than exploding into a short chase.

Ovenbird

LOW

Concealed Dome Nesting

Sheltered • Site-tied • Cautious

This makes the Ovenbird a low-frequency system: slow to shift home base, conservative with movement, and organized around a durable, place-bound dome that turns a small patch of habitat into a lasting refuge.

Owl Butterfly

LOW

An Eye Placed Far From the Body

Crepuscular • Marked • Deflecting

That makes it a low-frequency system: slow, unhurried and protected by a mark rather than by movement.

Owlet Moth

HIGH

Ears Tuned to One Predator

A simple ear on each side of the thorax with very few sensory cells, tuned to ultrasound • A distant bat call producing steady firing that turns the moth away • A close call producing saturated firing that collapses the flight into a spiral or a drop

Because the response is near-instantaneous, it operates as a high-frequency system.

Paca

LOW

A Resonating Chamber in the Cheek

Nocturnal • Solitary • Resonant

That makes it a low-frequency system: quiet, solitary and economical.

Pacarana

LOW

Forefoot-Held Slow Browse

Deliberate • Handling • Unhurried

Because everything is arranged around low expenditure, careful handling and slow turnover, it is a low-frequency system.

Pachyrhynchus Weevil

LOW

An Exoskeleton Nothing Can Break

A cuticle so heavily sclerotised that lizards attempting to eat one cannot crush it and abandon the attempt • Patterned scales containing photonic crystals, producing bright metallic spots visible from a distance • Predators learning to associate those spots with an insect that cannot be processed, and several unrelated beetles converging on the same pattern

Because encounters are occasional, it operates as a low-frequency system.

Pacific Black Duck

LOW

Breeding Whenever the Water Arrives

Waiting through dry years without breeding • Responding to flooding within weeks • Raising broods while the water and its invertebrates last

Since breeding events are years apart, it operates as a low-frequency system.

Pacific Hagfish

LOW

Seafloor Slime Evasion

Burrowed • Scavenging • Low-cost

Because the hagfish’s whole system is built around a calm, thrifty baseline punctuated by rare but extreme slime-and-knot escape bursts, it operates as a bimodal low-plus-high frequency system.

Pacific Herring

MID

School That Turns the Bay White

Schooling • Plankton-feeding • Synchronised

That makes it a bimodal system: synchronised schooling and a brief mass spawning.

Pacific Mole Crab

MID

Surfline Burrow Filter

Rhythmic • Wave‑locked • Stationed

This produces a mid-frequency system built around rhythmic, repeated engagement with each wave cycle rather than long fasting or single explosive bursts.

Pacific Parrotlet

MID

Small Flock Bursting for Cover

Foraging • Chattering • Ground-dropping

That makes it a bimodal system: steady flock foraging and sudden flight into cover.

Pacific Sea Nettle

MID

A Net Towed Behind

Slow rhythmic pulsing of the bell that moves the animal forward rather than chasing anything • Long tentacles and frilled oral arms trailing far behind, forming a wide curtain through the water • Anything that touches the curtain stung by nematocysts and passed forward to the mouth

Because the pulsing is continuous, it operates as a mid-frequency system.

Pacific Spiny Lumpsucker

LOW

Pelvic Suction Anchor

Anchored • Compact • Holding

This architecture makes it a low-frequency system: it is built to stay put and endure flow, not to cycle rapidly or sprint for long distances.