01Peregrine falcon
Falco peregrinus
wingspanwingspan 95 cmhabitatopen country
the field, logged
birds,in your field.
A field guide and trail-camera community for people who look up — log sightings, identify calls, and share the footage your trail cam caught while you weren't looking.
photo · Derek Keats
● new sighting · peregrine falcon
01
How it works
Three steps, from a glimpse to a life-list entry.
/ 01
Spot it
See something. Snap a photo, or just note the size, color, and where you were.
/ 02
Name it
Kestrel identifies the call and the field marks, then logs the sighting to your life list.
/ 03
Share it
Post it to the community — or pull the footage your trail cam caught overnight.
02
Everything but the waiting
See more birds, try less.
Instant ID
Sound and photo ID that names the bird, the call, and the field marks.
Life list, auto
Every sighting logged with species, time, and exact location. No typing.
Trail-cam drop
Footage uploads from your camera, auto-trimmed to the good parts.
Flyway maps
Live migration maps show what's moving through your region this week.
Field community
Share sightings, trade hot-spots, and learn from birders who've seen 800+.
Offline field mode
Full guide downloaded to your phone. Works past the last bar of signal.
03
The field guide
Five families, five ways to start.
0102Barn owl
Tyto alba
wingspanwingspan 90 cmhabitatfarmland
03Great egret
Ardea alba
wingspanwingspan 140 cmhabitatwetlands
04Ruby-throated hummingbird
Archilochus colubris
wingspanwingspan 11 cmhabitatgardens
05Black-capped chickadee
Poecile atricapillus
wingspanwingspan 20 cmhabitatwoodland
04
The sky, up close
Shot where the birds actually are.
05
The stoop
One peregrine, one frame at a time.
slow motion · Michael Herren
From the desk of Elena Marsh
Most birders keep a life list. I keep a life list and a hard drive of trail-cam footage I'll never sort through.
I saw my first kestrel from a bus window in high school — a small falcon hovering over a highway median, wings a blur, hunting the grass strip like it was a savanna. I missed my stop. I've been missing stops ever since.
What I learned that day: you don't need to travel for rare birds. The kestrel was in a median, between a gas station and a billboard. The rare bird was the one I finally looked up for.
So here's the invitation: look up. Log what you see. And if your trail cam caught something at 3 a.m. while you were asleep, post it — someone out there has been waiting to see exactly that.
Elena MarshFounder, KESTREL
06
By the numbers
Live, from our backend.
1.2M
sightings logged
8.4k
species identified
62k
trail cams live
410k
birders
07
Loved by birders
People who finally looked up.
★★★★★
"I'd been mis-hearing the same two calls for years. Kestrel named them on day one, and my life list tripled."
June P.Backyard birder
★★★★★
"The trail-cam drop is the best feature nobody else has. My camera caught a barred owl and the community went nuts."
Marcus T.Trail-cam keeper
★★★★★
"I set it to my flyway and now I know what's overhead before I look up. It's like a weather report for birds."
Sofia A.Weekend birder
08
The roadmap
Where we're going.
Q3 2026
Sound + photo ID engine and the full field guide, live in beta.
Q4 2026
Trail-cam auto-trim and community sighting feeds.
Q1 2027
Live tagged-bird tracking across all four flyways.
Q2 2027
kestrel field hardware: a solar trail cam that IDs what it sees.
09
Questions, answered.
How does Kestrel identify a bird?+
From a photo or a short recording. It matches the field marks and the call against a model trained on millions of checklists and recordings.
Does it work offline?+
Yes. The field guide downloads to your phone. Sound ID needs a signal; everything else works in the field.
Is it just for experts?+
No. It's built for people who've never held binoculars. Learn five calls and you're in.
Is it free?+
Yes — the field guide and life list are free during beta and stay free after launch.
Does it need a trail camera?+
No. Trail-cam drop is optional. The core guide and life list work without one.
Can I export my life list?+
Yes — eBird sync, CSV, or print. Your data is yours.
Look up. The field is already full.
birds, in your field.
photo · Tobi &Chris