Frequency signatures: Francois' Langur to Gee's Golden Langur
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 841–864.
Francois' Langur
Karst Cave Sleeping Site
Cliff-based • Cave-sleeping • Daily
Because the cycle repeats steadily every day, it is a mid-frequency system.
French Angelfish
A Paired Sponge Grazer Holding Reef Ground
Grazing • Paired • Territorial
That makes it a bimodal system: steady paired grazing with bursts of territorial defence.
Freshwater Angelfish
A Body Shaped Like Gaps
A body compressed into a thin disc with greatly extended dorsal and anal fins • That shape allowing movement between vertical stems and roots that a deep-bodied fish cannot pass • Dark vertical bars continuing the lines of the surrounding stems so the outline disappears among them
Because movement is continuous but unhurried, it operates as a low-frequency system.
Freshwater Butterflyfish
Ripple-Reading at the Air Film
Hanging • Flat-finned • Upward-facing
Minimal expenditure, a single occupied layer and long quiet waits make this a single low-frequency system.
Freshwater Crab
Hatching as a Complete Crab
Large yolk-rich eggs carried by the female rather than released into the water • The whole larval sequence completed inside the egg rather than in the plankton • Young hatching as miniature crabs able to walk and feed immediately, with no marine phase at all
Because the cycle is annual, it operates as a low-frequency system.
Freshwater Crayfish
A Reflex Faster Than Thought
A giant interneuron running the length of the nerve cord carrying a single impulse • That impulse firing the abdominal flexor muscles together in a few thousandths of a second • The tail snapping under the body and driving the animal backwards away from the stimulus
Because the response is near-instantaneous, it operates as a high-frequency system.
Freshwater Eel
Fat-Banked Silvering Ocean Run
Growing • Storing • Settled
Long accumulation followed by one sustained, unrefuelled journey gives two structural modes: low-frequency growing and mid-frequency travelling.
Freshwater Pearl Mussel
A Riverbed Life Borrowed From Salmon Gills
Filtering • Anchored • Long-lived
That makes it a phase-change system: a brief mass larval release onto host fish and a very long filtering adult life.
Frilled Lizard
The Jaw That Opens the Frill
Clinging • Foraging • Flaring
That makes it a mid-frequency system: ordinary cryptic foraging with a single coupled action standing between it and everything else.
Frilled Shark
Coiled Deepwater Ambush Frame
Slow • Coiled • Waiting
Because the whole system is built around long, quiet waiting punctuated by brief, decisive strikes, the frilled shark operates as a bimodal low–high frequency hunter rather than a continuous chaser.
Fruit Bat
Night Flights That Replant the Forest
Commuting • Feeding • Dispersing
That makes it a bimodal system: nightly foraging flights and daytime hanging rest.
Fruit Fly
Genes Visible Under a Lens
Salivary gland cells replicating their DNA repeatedly without dividing, so each chromosome becomes a bundle of a thousand aligned copies • Those giant chromosomes showing a fixed pattern of dark and light bands, each band a reproducible landmark along the DNA • Deletions, inversions and duplications visible directly as missing or reversed bands under an ordinary microscope
Because generations turn over in days, it operates as a mid-frequency system.
Gaboon Viper
Litter-Matched Fang Delivery
Coiled • Indistinguishable • Weeks
Because near-total stillness supports a single overwhelming commitment, this is a bimodal system.
Galah
Mutual Preening Pair Bond
Paired inside the flock • Preening each other • Returning to the same hollow
Because that contact is continuous through the day, it operates as a mid-frequency system.
Galapagos Hawk
Several Males Raising One Brood
Perching • Scanning • Group-held
Because the system combines long watching from perches with brief drops onto prey, it is a bimodal system.
Galapagos Penguin
A Cold-Current Diver Hiding from Equatorial Sun
Diving • Inshore • Opportunistic
Because the system alternates between fishing in cool water and managing heat on land, it is bimodal.
Galápagos Sea Lion
Losing Heat on the Equator
Hauling out on rock and sand directly on the equator • Holding flippers up to the air and lying in shade, surf or wet sand • Returning to cold upwelled water to shed heat when nothing else works
Since cooling behaviour recurs through the day, it operates as a mid-frequency system.
Galápagos Tortoise
The Slow-Metabolism Water Vault
Massive • Slow-burning • Stored
That makes it a strongly low-frequency system: heavy, economical and built for a time horizon measured in decades.
Garden Warbler
A Migration on a Clock
Laying down fat before departure • Becoming restless at night for a number of weeks that matches the journey • Stopping when the internal programme runs out rather than when the destination is reached
Since the whole cycle runs once a year, it operates as a low-frequency system.
Gargoyle Gecko
Directional Setae, Instant Release
Clinging • Waiting • Stepping
Minimal expenditure and patient climbing make this a single low-frequency system.
Garibaldi Fish
Reef Signal Fortress
Visible • Patrolling • Defensive
Because the system relies on ongoing, rhythmic activity and continuous visual signaling rather than long dormancy or rare explosive efforts, it operates as a mid-frequency pattern built around persistent territorial display and defense.
Gau Banded Iguana
One-Island Canopy Leaf Browser
Leaf-fed • Slow-living • Island-bound
A cheap diet, little movement, slow breeding and a single small range add up to a low-frequency system that runs on patience and has no second population to fall back on.
Gaur
Size as the Whole Argument
Massive • Ridged • Unhurried
That makes it a low-frequency system: slow, heavy and defended by scale rather than by behaviour.
Gee's Golden Langur
Fermenting Leaves Within a River-Bound Range
Leaf-eating • Resting • Arboreal
A slow, digestion-paced routine makes it a SINGLE LOW system.