Frequency signatures: Nile Tilapia to Northern Pig-tailed Macaque
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 1,441–1,464.
Nile Tilapia
Breeding Adjusted to the Conditions
Growing • Spacious • Large
That makes it an adaptive system: the strategy is set by the conditions rather than by the species.
Nilgai
Sloped Back, Long Legs, Dry Country
Striding • Mixed-feeding • Independent
That makes it a low-frequency system: unhurried, tolerant and undemanding.
Nilgiri Tahr
Soft-Cored Hoof Grip
Grazing • Gripping • Daily
Because grazing and retreating run as a steady daily cycle rather than in bursts, it is a mid-frequency system.
Nine-banded Armadillo
Banded Shell Over a Low Engine
Digging • Plated • Slow
That makes it a low-frequency system: slow, armoured and economical rather than reactive.
North American Beaver
The Water-Level Engineer
Building • Maintaining • Level-holding
That makes the beaver a mid-frequency system: rhythmic, repetitive and defined by continuous construction rather than any burst of speed or strength.
North American Raccoon
Tactile Forepaw Search
Handling • Feeling • Investigating
That makes the raccoon a mid-frequency system: rhythmic, continuous and built on many small acts of manipulation.
North American River Otter
Hydrodynamic Play Engine
Rhythmic • Social • Practice
Because their biology supports a continuous, playful mid-level activity pattern that regularly converts into short high-intensity chases and escapes, the river otter operates as a bimodal system with a rhythmic MID practice mode and a triggered HIGH execution mode.
Northern Bald Ibis
Taught Migration Route Transmission
Colonial • Probing • Learned route
Because the annual cycle runs steadily, it is a mid-frequency system.
Northern Basket Star
Nocturnal Current Net
Sheltered • Coiled • Hidden
Because its biology is built around a protected, low-output shelter state and a recurring, current-dependent feeding state, the basket star operates as a bimodal system with a low-frequency refuge mode and a mid-frequency, night-basket harvesting mode.
Northern Bobwhite
A Circle Facing Outward
A covey of a dozen or so birds settling on the ground together at dusk • Arranging themselves in a tight circle with tails inward and heads facing outward • Every direction covered by a watching bird while the bodies press together to conserve heat
Because the cycle is daily, it operates as a low-frequency system.
Northern Cardinal
Year-Round Pair Duet
Paired • Duetting • Resident
That makes the cardinal a mid-frequency system: rhythmic, continuous and organised around maintaining one relationship rather than competing for a new one each year.
Northern Collared Lemming
White Coat and Double Claws for Winter
Subnivean • White-coated • Tunnelling
The seasonal switch makes it a phase-change system.
Northern Elephant Seal
Cycling Fasting Dive Engine
Stored • Fasting • Shorebound
Because these two contrasting operating states are both essential and tightly tied to the annual cycle, this is a bimodal system: a low-frequency fasting phase anchored to beaches and a high-frequency diving phase offshore.
Northern Flatid Planthopper
Sidling Round to the Far Side
Still • Pale • Sap-feeding
That makes it a bimodal system: still feeding and sidling evasion.
Northern Flicker
Ant-Probing Ground Woodpecker
Hopping on open ground • Driving the bill into soil • Withdrawing a loaded tongue
Since that action repeats steadily through daylight, it operates as a mid-frequency system.
Northern Fulmar
Stiff Wings Working the Wind Gradient
Soaring • Stiff-winged • Almost free
That makes it a low-frequency system: economical, patient and dependent on the wind rather than on muscle.
Northern Gannet
An Arrow That Keeps Swimming
Searching • High • Patrolling
That makes it a bimodal system: wide efficient searching and a committed high-speed entry that continues into pursuit.
Northern Hairy-nosed Wombat
Burrow-Buffered Low Metabolism
Underground • Slow • Nightly
Because everything runs at a very low rate, it is a low-frequency system.
Northern Hawk Owl
From the Very Top of the Spruce
Perched • Topmost • Scanning
That makes it a bimodal system: extended high watching and long committed glides.
Northern Jacana
Long Toes Turning Lily Pads Into Ground
Leaf-walking • Gleaning • Flipping
That makes it a bimodal system: steady surface foraging and a slow, male-run care phase.
Northern Lapwing
Broad Wings Beating the Air Audibly
Standing • Cryptic • Ground-nesting
That makes it a bimodal system: motionless concealment and a loud aerial assertion.
Northern Luzon Giant Cloud Rat
Slow Heavy Leaf-Eater Climbing by Night
Climbing • Leaf-eating • Nocturnal
Its steady, unhurried, night-time routine makes it a SINGLE LOW system.
Northern Mockingbird
Copied Phrase Repertoire
Sampling • Repeating • Expanding
That makes it a mid-frequency system: rhythmic and continuous, where output is a steadily growing library delivered in repeated bursts.
Northern Pig-tailed Macaque
Grooming-Credit Network
Grooming • Ranked • Coordinated
That makes the macaque a mid-frequency system: rhythmic, repeated and coordination-led.