Frequency signatures: Mudskipper to Nile Monitor
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 1,417–1,440.
Mudskipper
Carrying the Water With It
Amphibious • Charged • Crutching
That makes it a mid-frequency system: continuous work punctuated by regular recharging.
Mugger Crocodile
Submerged Shoreline Launcher
Still • Hidden • Waiting
That makes this a bimodal system: a dominant low-frequency waiting mode structurally paired with a necessary high-frequency ambush burst.
Mule Deer
All Four Feet at Once
Pushing off with all four legs together in a stiff-legged bound • Covering broken rock, brush and slope in a series of high arcs rather than a run • Changing direction completely on landing because each bound starts from a standstill
Because escape events recur, it operates as a mid-frequency system.
Multicolored Asian Lady Beetle
Reflex-Bled Alkaloid Warning
Hunting colonies • Breeding fast • Bleeding when seized
Because the year of consequence is one continuous rhythm of finding, eating and breeding at speed, this operates as a mid-frequency system.
Muscovy Duck
Clawed Perch Roosting
Perching • Quiet • Self-sufficient
That makes it a low-frequency system: quiet, economical and organised around removing risk by choosing where to rest rather than by escaping.
Musk Ox
A Stance That Works on Wolves Only
Grazing tundra • Closing into a ring • Standing absolutely still
Slow and conservative, this is a low-frequency system.
Mute Swan
Neck-Reach Surface Feeding
Floating • Upending • Holding the stretch
Because the feeding is continuous, unhurried and repeated for many hours a day, it operates as a mid-frequency system.
Nacunda Nighthawk
A Gape Wider Than the Bill
Sweeping • Scooping • Repeating
That makes it a mid-frequency system: a repeated low-cost sweep whose return depends on volume rather than on any single capture.
Naked Mole-rat
Single-Queen Reproductive Suppression
Queen • Breeding • Continuous
Because the system operates at three distinct rates simultaneously rather than switching between them, it is a multimodal system.
Namaqua Sandgrouse
Desert Commute Carrier
Settled • Cryptic • Seed-fed
The result is a bimodal rhythm: a low-frequency, ground-based, conservative living mode anchored around chicks and seed patches, coupled with a mid-frequency, timed shuttle mode that regularly extends care far beyond the comfort zone of local resources.
Namib Desert Beetle
Waxed Shell with Wetting Bumps
Sealed • Waxed • Frugal
Slow spending against a thin, unreliable trickle of supply places it at the low-frequency end.
Napoleon Wrasse
Female-to-Male Sex Change
Sequential • Reef-bound • Lifelong
Because life on the reef runs as a steady daily cycle, it is a mid-frequency system.
Narrow-bordered Bee Hawkmoth
A Bumblebee Disguise Built on Scabious
Larval • Host-bound • Feeding
The switch from a leaf-bound larva to a fast, bee-like adult makes it a phase-change system.
Narwhal
Stored-Oxygen Ice Dive
Deep • Dark • Oxygen-banked
Because everything runs on stored capacity spent slowly in a place with no margin for error, it is a low-frequency system.
Nene
Reduced-Web Lava Walking
Walking • Grazing • Terrestrial
Because walking and grazing run as a steady daily cycle, it is a mid-frequency system.
Neotropic Cormorant
Light Frame in Shallow Water
Shallow • Flocked • Repeating
That makes it a mid-frequency system: frequent, mobile and worked in company rather than alone.
New Caledonian Crow
Making a Hook in Advance
Selecting a twig or a Pandanus leaf • Working it into a hooked or barbed tool away from the food • Carrying the finished tool to the prey and keeping it afterwards
Since tool episodes recur through the day, it operates as a mid-frequency system.
New Zealand Bellbird
Canopy Resonance Caller
Rhythmic • Projected • Site-tied
Because its survival pattern is a repeating cycle of calling, feeding and returning to favored perches rather than long waits or explosive bursts, the bellbird is best understood as a mid-frequency system built on rhythmic, projected use of place.
New Zealand Fur Seal
Air Trapped in Dense Fur
Carrying a dense underfur beneath coarse guard hairs • Trapping a layer of air against the skin that the water never reaches • Grooming constantly to keep that layer intact and diving on it
Since dives and haul-outs recur through the day, it operates as a mid-frequency system.
Nicobar Pigeon
Gizzard-Stone Seed Mill
Commuting • Milling • Daily
Because the system runs on a repeated daily circuit and continuous mechanical processing, it is a mid-frequency system.
Niger Triggerfish
A Spine Bolted Upright
Reversing into a crevice tail first when threatened • Raising the heavy first dorsal spine and locking it upright with a smaller second spine wedged behind its base • Becoming impossible to extract because the spine bears against the rock rather than against muscle
Because withdrawals recur, it operates as a mid-frequency system.
Night Parrot
Spinifex Tunnel Crypticist
Buried • Still • Unseen
Because the whole system is built to keep exposure rare and tightly controlled, with only modest pulses of movement around a very secure base, the Night Parrot is best understood as a bimodal low–mid frequency operator.
Nile Lechwe
Flood-Pulse Grazing Shift
Wet • Confined • High water
Because the two flood states are both essential, it is a bimodal system.
Nile Monitor
Lizard Built Like a Predator
Searching • Terrestrial • Raiding
That makes it an adaptive system: the operating state is chosen to suit the situation rather than fixed by anatomy.