Frequency signatures: False Water Cobra to Flame Bowerbird
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 793–816.
False Water Cobra
A Hood Spread the Wrong Way
Hunting • Aquatic • Active
That makes it a bimodal system: continuous active hunting and a broad flattened threat display with something behind it.
Fan-horned Beetle
Antennae Opened Into a Net
Antennal segments extended into long lateral branches that fan out into a comb • Receptor cells distributed across that whole expanded surface rather than on a simple filament • A few molecules of female pheromone in a large volume of air intercepted because the sampled area is enormous relative to the insect
Because sampling is continuous, it operates as a high-frequency system.
Fanaloka
Fat Banked in the Tail
Searching • Sniffing • Storing
Continuous nightly searching makes this a mid-frequency system.
Fat-tailed Dunnart
Tiny Hunter Banking Fat in the Tail
Hunting • Nocturnal • Insectivorous
That makes it a bimodal system: nightly hunting and bouts of daily torpor.
Fat-tailed Dwarf Lemur
Tail Fat Torpor Engine
Seasonal • Stored • Quiet
Because the whole system is built around dense storage, low waste and long, quiet stretches of survival between pulses of intake, the fat-tailed dwarf lemur is a single-mode, strongly low-frequency system.
Featherfin Cichlid
Sand-Bowl Court Architect
Rhythmic • Courtship • Builder
That makes this a mid-frequency system built around rhythmic, ongoing sand-circle maintenance and display.
Feathertail Glider
Feather-Vane Steering on a Tiny Glide
Blossom-foraging • Nocturnal • Nimble
That makes it a bimodal system: busy nocturnal foraging among flowers and short, steered glides between trees.
Fennec Fox
The Night-Shift Heat Exchanger
Cool-hour • Listening • Water-thrifty
That makes the fennec fox a low-frequency system: quiet, thrifty and organised around avoided cost rather than raw output.
Fiddler Crab
Tide-Clocked Claw Waving
Emerging as the water drops • Waving one enormous claw • Plugging the burrow before it returns
Since that window repeats on every tide, it operates as a mid-frequency system.
Fieldfare
Colonies That Bombard Their Attackers
Nesting in loose colonies rather than alone • Rising together at an approaching predator • Striking it with accurately aimed droppings
Since colony responses recur through the season, it operates as a mid-frequency system.
Fiji Banded Iguana
A Green Leaf-Eater Still in the Canopy
Arboreal • Folivorous • Still
Because the system is built on stillness and slow feeding, it is a low-frequency system.
Fin Whale
Pleated Throat Behind a Racing Hull
Cruising • Streamlined • Far-ranging
That makes it a bimodal system: sustained streamlined cruising and brief, explosive engulfment.
Finch-billed Myna
Hundreds of Holes, One Tree
A short stout finch-like bill used to excavate holes in soft dead standing timber • Hundreds of pairs cutting nest chambers into the same trunk until it is honeycombed from base to crown • The whole colony breeding inside a single dead tree rather than spread across the forest
Because breeding is seasonal, it operates as a low-frequency system.
Finlayson's Squirrel
Pigment-Independent Forager
Rhythmic • Opportunistic • Arboreal
That produces a mid-frequency system: a steady, rhythmic pattern of activity and vigilance where appearance can vary widely while the core daily operating rhythm remains consistent and useful.
Fire Salamander
Parotoid Spray, Always On
Black-and-yellow • Damp • Unhurried
Slow movement, long life and no need for speed make this a single low-frequency system.
Fire-maned Bowerbird
Ornamented Display Architect
Rhythmic • Curating • Persuasive
That pattern of ongoing, crafted attraction makes the fire-maned bowerbird a mid-frequency system built on regular cycles of building, editing and showing.
Firebug
Nymphs That Would Not Mature
Developing through nymphal stages under hormonal control • Requiring juvenile hormone to fall before the final moult to adult • Being stopped at that point by a compound in North American paper that mimics it
Since the cycle runs annually, it operates as a low-frequency system.
Firefly
A Code Written in Flashes
Males flying and emitting flashes of a species-specific duration, interval and pattern • Females answering from the vegetation after a precise delay unique to their species • The exchange continuing only while both sides keep the timing, so the code itself is the species barrier
Because the exchange repeats through the evening, it operates as a mid-frequency system.
Firefly Squid
Nightly Lift, One Spring Landfall
Migrating • Counter-lit • Nightly
That makes it a bimodal system: nightly vertical migration and a single mass spawning.
Fischer's Lovebird
A Domed Nest in a Hole
Carrying strips of bark and grass to a tree cavity in the bill • Weaving a roofed nest with a side entrance inside it • Filling a cavity that other parrots would simply lay in
Since nest building is annual, it operates as a low-frequency system.
Fisher
Attacking a Porcupine From the Front
Ranging • Arboreal • Opportunistic
That makes it a bimodal system: wide opportunistic ranging and a specific repeated attack sequence.
Fishing Cat
Surface-Tap and Paw Scoop
Crouched • Watching • At the edge
Because the animal fails without either of them, it is a bimodal system.
Flamboyant Cuttlefish
Walking Signal on Open Sand
Walking • Hunting • Benthic
That makes it a bimodal system: slow benthic hunting and sudden conspicuous display.
Flame Bowerbird
Forest Display Builder
Cautious • Foraging • Rest
The system therefore alternates between a quieter, shelter-and-feeding mode and a structured, rhythmic display mode built around a specific location, making it a bimodal pattern with low-frequency conservation anchored by a mid-frequency, site-focused arrangement and performance rhythm.