Nightjar
A motion identity for an open-air film season that begins at dusk.
A Studio Helper concept · not a real event
01 The idea
A bird you only see when it moves
By day a nightjar lies lengthwise along a branch, and its patterned plumage makes it very hard to pick out. At dusk the males start to sing, a long mechanical trill called the churr. In a torch beam their eyes shine back.
Cinema works the same way: pictures that exist only in motion, made visible by a beam of light in the dark. So Nightjar isn’t a logo with animation added afterwards. It is a set of states that only make sense in time, and the time is the evening.
- About twenty minutes after sunset is when males begin churring, as a rough guide. BTO, Nightjar Survey Instructions 2025
- About 1,900 notes a minute, in a band of 1–2.5 kHz. Country Life; Docker, Abrahams & Lowe, Bird Study 2020
- A white patch across three primaries marks the male in flight; the eyes carry a tapetum lucidum, which is why they shine. European nightjar, Wikipedia
02 The sky clock
Doors at sunset. Films at −6.0°.
Twilight is measured in angle, not in minutes. Civil dusk comes when the sun is six degrees below the horizon, nautical at twelve and astronomical at eighteen.
How long that takes depends on where you are and when. So Nightjar writes its programme in the sky’s own units, and each ticket turns the angle into a clock time for its place and date.
In London at midsummer, twenty minutes after sunset puts the sun 3.0° down. That is when the purple light is brightest, 3–4° by the WMO Cloud Atlas, and about when the nightjars start. The identity’s signature colour and its sound share a minute.
Nightjar · open-air
Screen 1
- Doors, sunset
- —
- Film, −6.0°
- —
- Night, −18.0°
- —
—
Illustrative ticket. Times are computed in this page for the place and date you choose.
03 The mark
One line, three readings
At sunset it is a line with the sun sitting on it. As the light goes, the point lifts off and becomes an eye.
The line lifts into two long wings, with a gap near each tip for the male’s white patch. For the screening, each wing splits along its length and the halves part into the bars of a 2.39:1 letterbox. Four blades and one eye make every state, so any state can move to any other.
Drag the wings · hold to make it sing · point at the eye
04 Type
The word is as wide as the wings
The wordmark is set in Science Gothic, a variable font modelled on Morris Fuller Benton’s Bank Gothic, with a width axis that runs from 50 to 200.
Nightjar ties that axis to the wingspan. Stretch the letters and they read lighter, so the wider the word, the heavier it is drawn, and its colour holds at every width. We measured that on the font’s own outlines rather than judging it by eye. The contrast axis carries light and rises when the projector is on. Georama sets the text, and Martian Mono sets angles and timecode.
NIGHTJAR
Weight follows width: 300.
Display · Science Gothic
Films after dusk
Thomas Phinney, Vassil Kateliev, Brandon Buerkle · 2025 · four axes: width, weight, contrast, slant
Text · Georama
Doors open at sunset. Bring something warm; the heath cools fast once the light has gone.
Production Type · width and weight, with italics
Angles and time · Martian Mono
−6.0° · 00:29:19:08
Roman Shamin, Evil Martians · monospaced, so figures never shift as they count
05 Colour
Colour taken from the evening
The palette starts as a physically based sky, rendered with the atmosphere model in Hillaire (2020): Rayleigh and Mie scattering, ozone absorption, and the Earth’s shadow.
Three hues were read off that sky at the moments the programme uses. Each was then graded in the open, by a stated amount for a stated reason, and every step was solved for contrast on the night ground, not picked.
Two screens and a press
Wide-gamut screens get the Display P3 versions of the signature colours. Violets and magentas are the colours CMYK prints worst, so each colour carries a press value, checked against a SWOP press profile, with its measured round trip stated. The Purple Light passes the gamut alarm but still shifts about dE 10, so printed pieces are proofed.
For every eye
Simulated dichromacy (Brettel 1997). Purple Light and Nocturne sit close in hue, so they are always separated by lightness as well: every text pairing is checked against WCAG 2 on the ground it sits on.
06 Motion
Nothing moves without a cause
Springs, not durations
Every movement is a damped spring solved exactly, so a film can sample any frame and a hand can throw the wings mid-flight. Heavy things never overshoot. Feathers overshoot a little and settle.
Drag the tip and let go. The root follows on the wing spring and the tip on a softer one, so the feather lags a beat behind.
The dusk curve
Anything in the identity that goes down, whether house lights, a fade or the bumper’s bars, eases on the sky model’s own fall in zenith brightness from sunset to civil dusk.
The wing-clap, frame by frame
Twelve frames at 24 per second. The churr, at about 32 notes a second, is faster than a film frame can show. In the exported films each frame is eight exposures across a 180° shutter, so the trill reads as a blur, the way a camera would see it.
07 Sound
Heard before it is seen
The sonic logo compresses a real song’s structure into a few seconds: the churr, then a terminal phrase that slows and drops like a machine winding down, then two wing claps.
Docker, Abrahams and Lowe (2020) found wing claps after 87% of songs that end this way. Nightjar’s version is synthesised, with no recordings and nothing sampled, and the visuals read the same schedule the audio plays. The wings crack down on the sample the clap lands on.
Sound plays only when you press play.
08 Films
Six films, drawn by this page
The title sequence, three idents, the bumper that plays before each screening, and a vertical cut. They are rendered here, live, by the same code that exported the MP4s.
Press play
09 In use
On the heath, in a pocket, on the screen
Posters that catch a torch, tickets that tell the time by the sky, and a phone that counts down to civil dusk wherever it is.
Tonight · London
00:00
until −6.0°, when the film starts
Doors are open. The sun has set.
Illustrative: London on 21 June 2027, four minutes after sunset. The countdown runs in real seconds, and its end is the computed time of civil dusk.
Screen
400 m · follow the lamps
Wayfinding on the heath: a frame, a direction and a lamp. It reads by torchlight because the lettering is lamp-coloured, and the eye is the only point that glows.
Nightjar
A motion identity · Studio Helper concept · 2026
- Concept, design, motion, sound and code
- Studio Helper
- Display
- Science Gothic, by Thomas Phinney, Vassil Kateliev and Brandon Buerkle
- Text
- Georama, by Production Type
- Angles and time
- Martian Mono, by Roman Shamin and Evil Martians
- Typeface licence
- SIL Open Font License 1.1
- Sky
- After Hillaire (2020), A Scalable and Production Ready Sky and Atmosphere Rendering Technique
- Twilight times
- NOAA solar position equations, via astral 3.2 and in this page
Sources
- British Trust for Ornithology. Nightjar Survey Instructions 2025.
- Docker, S., Abrahams, C. and Lowe, A. (2020). Identification of different song types in the European Nightjar Caprimulgus europaeus. Bird Study.
- RSPB. Nightjar. Length 26–28 cm, wingspan 57–64 cm.
- Country Life and Caught by the River, on the churr’s 1,900 notes a minute.
- Wikipedia. European nightjar.
- WMO International Cloud Atlas. Purple light.
- Hulburt, E. O. (1953). Explanation of the brightness and color of the sky, particularly the twilight sky. JOSA 43(2).
- Hillaire, S. (2020). A Scalable and Production Ready Sky and Atmosphere Rendering Technique. EGSR.
- Google Fonts. Science Gothic: modelled on Morris Fuller Benton’s Bank Gothic (1930–34).
Honestly
Nightjar is not a real event, and this is concept work. The name is shared by a music and arts festival in Torquay, Victoria, and by film production companies in Singapore, Exeter and the United States. This identity has no connection with any of them, and never calls itself a festival.
The churr is synthesised, not recorded. The bird’s song structure, timing and range come from the sources above; the timbre and the minor phrase’s rate are modelled. The ticket and phone times are computed, not invented.