Your DarkFlight survey, reviewed and reported by Roost
Roost is the online platform where you review a DarkFlight survey - thermal and acoustic together, already in sync. Confirm the bats, assign species, and download report-ready evidence. One place, instead of juggling separate video, audio and reporting tools back at the office.
The survey ends. The data pile begins.
There is never a shortage of data after a bat survey. Infrared cameras and illuminators, wide-angle thermal, scopes and monoculars, acoustic detectors from the all-singing-all-dancing kind to a USB plug-in mic. Whichever route you have gone down, it all lands on your desk as a pile to sift through - usually with a stack of separate tools.
The pile
- hours of thermal footage
- separate acoustic recordings
- timestamps to reconcile
- field notes across positions
The tool-juggling
- one program to watch the video
- another to read the audio
- a third to build the report
- copying between all of them
The drag
- slow report turnaround
- senior time lost to review
- a peak-season backlog
DarkFlight and Roost are built to cut that work down by pairing the video and the audio from the start. Roost is the one place you review the whole survey and leave with the evidence.
From a night of capture to confirmed evidence.
Capture with DarkFlight
The wide-angle thermal camera and the full-spectrum acoustic detector record together in one unit, time-synced for the whole survey. Every visual event already lines up with its call.
Upload the survey to Roost
Sign in and send the night up to your private account, hosted in the UK and EU and ready to review.
Review in one pass
Work through the survey block by block - video and audio side by side, already in sync. Clear the empty blocks at a glance, open the busy ones, confirm the bats and assign the species.

Download report-ready evidence
Take out clean, defensible evidence for your report - plus all of your raw data, so you are never locked in and can still use any tools you already trust.
Built to get you through a survey fast.
A few looks at the real platform. Turn your sound on for the clips - the bat call plays in time with the sonogram and the video, exactly as you review it.

Video and audio, already in sync
Watch the thermal and hear the call at the same moment, lined up to the frame - no timestamp-matching, no flicking between programs to work out what happened when. Turn your sound on.
Every block, reviewed and evidenced
Each block gets an explicit, attributable decision - confirmed, possible, no bat, other movement, or flagged for senior review - and a sample is second-reviewed. The flight path traced above and the call on the sonogram below are the evidence, ready for the report and defensible for planning and licensing.

Tune in on the call
Zoom the sonogram to the exact frequency band and tune the heterodyne to hear a call clearly, then assign the species with the evidence right in front of you. Turn your sound on.
Composite-first review
Each block is a 32-second composite - all the movement in one image - so empty blocks are cleared at a glance and only the busy ones need the video opened.
The acoustic queue
Jump straight to the blocks with the most ultrasonic activity, so the busiest moments come to you instead of you hunting for them.
Nothing hidden
A coverage ledger shows the technical health of the survey at a glance, and any camera or detector dropouts are surfaced in plain English - it matters most when the stakes are high.
Today you assign each species yourself, with the tuned audio and synced video in front of you - an in-app species suggestion is on the way. And you can always download all the raw data alongside the report-ready outputs: Roost speeds the work up, it never locks your evidence in.
One place. Far less desk time.
Instead of exporting a night of capture into a stack of separate tools and stitching it back together, you review the whole survey in Roost and leave with confirmed, report-ready evidence and a clear audit trail. Roost pairs with any DarkFlight survey, whether you hire the kit or own it.
New to DarkFlight? See how the capture side works → · Hire or buy a kit →
Roost, briefly.
Do I need DarkFlight to use Roost?+
Roost is built for DarkFlight surveys. The thermal video and full-spectrum acoustic arrive already time-synced, which is exactly what makes the one-pass review possible.
Where is my survey data stored?+
In your private account, hosted in the UK and EU.
Am I locked in to Roost?+
No. You can download all of your raw data and the report-ready outputs at any time. Roost speeds the analysis up, it does not hold your evidence hostage.
Does Roost identify species for me?+
You assign the species with the tuned audio and the synced video in front of you. An in-app species suggestion is on the way.
Put DarkFlight and Roost to work.
Hire DarkFlight by the survey night, or send an enquiry about how DarkFlight and Roost fit together for your sites and we’ll reply by email.
Already a customer? Log in to Roost →