I turned my security cameras into an automatic bird identification system
401 points - yesterday at 4:47 PM
SourceThe documentary 'Listers ' (about two brothers who go all in on birding for a year) on YouTube is so hilarious and got me into birding (and using Merlin) this year. Highly recommend.
ben1040
yesterday at 5:14 PM
I did exactly this with BirdNet-Go and my Unifi doorbell cam. Unifi exposes an RTSP feed for each camera so it was easy for the tool to just "listen" to the doorbell and start classifying.
I have a spare e-ink display and my next weekend project to follow onto this is to wire it up so it shows some faux "woodcut" images of birds detected, or something like that.
sciencesama
yesterday at 5:48 PM
just use trmnl it will make it super easy
I like my money to not go towards transphobes
comboy
yesterday at 5:36 PM
Btw, Merlin Bird ID app by Cornell University is so good that I got some people interested that weren't into that topic at all.
CobrastanJorji
yesterday at 10:19 PM
Merlin's story is very interesting: https://www.birds.cornell.edu/home/the-magic-of-merlin/
The journey to a magical, free bird sound ID app involves some obvious steps (the NSF gave them money), but the amount of timeline offramps is really high. The NSF didn't think this app was educational ("it's just telling them the answer, they don't even have to work for it!"), the funding ran out so they were thinking of charging money, eBird happened to have five years of bird sound recordings they could use, a computer vision guy on the team happened to learn that spectrograms are basically the same as pictures...
And the result is tremendously useful! They get great signal on where birds are, and they're making people so much more interested in birds and nature and science. And I think charging $1 for the app or, shudder, some sort of subscription model might've ruined the whole thing.
phainopepla2
yesterday at 6:22 PM
But a warning for novice birders: Merlin's sound ID feature produces a lot of false positives.
Merlin got me into birding, and I've found this to be true, at least in some regions, especially if there's lots of background noise.
Unless a species has a really, really unique call or song, I've made it my personal rule to get eyes on it and, if I'm still not convinced, to take a picture and cross reference with iNaturalist and what folks on there think of it.
I've learned to curse the species that differ from others by the sheen of the backs of the males' necks or the angle of a wingbar. Also, gulls that only differ by things like the color of their feet or beaks.
Occasionally I'll see a screenshot of Merlin with, I dunno, a dozen different birds, and in the middle of the list: a catbird. I never have the heart to tell people that they just heard one very creative bird.
pfdietz
yesterday at 8:30 PM
You can usually tell, though. Rare birds in the wrong place or time that come up only once are problematic, but if the bird is detected repeatedly there's a better chance. You should also be on the lookout for birds that mimic other birds (like the northern mockingbird and the gray catbird.)
Cornell / Merlin / eBird publishes a global species frequency DB indexed by location and date (so, how likely is a species to appear in a place, on a day of the year)... In a project that I was working on, this helped a lot when used to influence the "raw" identification based on appearance alone.
bluebarbet
yesterday at 11:25 PM
For info, there's a FOSS bird-call app, available on F-Droid, that's pretty decent: WhoBird
drcongo
yesterday at 6:47 PM
I've not seen this personally, but maybe it's region specific.
bakibab
yesterday at 6:02 PM
Indeed. I use Merlin Bird ID all the time. I found it good across many countries.
drcongo
yesterday at 6:21 PM
I call it Pokemon Go for grown ups. How many do you have in your life list? I finally managed to snag a Tawny Owl last week.
nbaugh1
yesterday at 6:31 PM
I've got 33. I don't know how that stacks up against other but a large percentage of them came just from my backyard. Just got added a Baltimore Oriole that showed up this week.
I've only been birdwatching since spring and I got 28 species already. Lots of seabirds because I spend a lot of the time at the beach.
drcongo
yesterday at 6:46 PM
I'm up to 71 thanks to the joys of taking it on holiday to other countries (less joy for my family), and occasionally going places just because I know there'll be new birds there.
Personal best for a single session is 23 birds in my back garden over the course of a couple of coffees. I have though spent a fair bit of time making the garden as attractive to different types of bird as possible - mainly through having a variety of different shaped feeders with different feed in. I can recommend the NatureSpy camera feeder too [0] - though I have had to modify it a little to make the food hole smaller otherwise magpies empty the thing in a single day just chucking all the seed on the floor. Dickheads.
[0] https://naturespy.org/collections/wifi-solar-bird-feeder-nes...
maciejb
yesterday at 10:20 PM
I tried that with my Aqara camera. The mic there has no windshield, though; wind noise was terrible. Also I couldn’t get Aqara support to enable higher sampling rates in the firmware than 16kHz; BirdNET expects 48kHz audio samples.
Ended up installing a better microphone attached to a RPi3A+ and using a RaspberyPi 4 which I already owned for hosting BirdNET-Go
https://maciejb.me/posts/birdnet-go-setup/
Much better sound quality now!
I built an esp32 with 48khz mic soldered on, feeding rtsp stream to server in living room. Works amazing. Need to build more mics.
KyleWasTaken
yesterday at 5:21 PM
Heads up. I noticed the screenshot of your markdown card has an ASCII block that goes below the baseline. `U+2588` (Full block) tends to do that depending on a lot of things.
I made a change to the markdown card sometime ago that uses only `U+2581` through `U+ 2587` instead to avoid that issue.
It's under a collapsed block here:
https://www.kyleniewiada.org/blog/2025/05/backyard-bird-trac...
jasontucker
yesterday at 7:18 PM
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electroweak
today at 2:29 AM
I don't know how this possibly worked for the northern mockingbird. One full moon I stood and listened to one call continuously for an hour and I couldn't remember hearing the same call twice. Every bird I'd ever heard in person and more mimicked...several car alarms..sirens... Do they even have their own distinctive call?
Merlin identifies them for me
tacodestroyer
yesterday at 6:25 PM
Nice! I never thought about using my security cameras but ended up building a regular Birdnet-Pi with a microphone. I took it one step further to make it portable so that I can use it when we hike or travel to new places. Added a little e-ink display to the front and it allows me to see Top 3 for the day, last detected, and total number for the day.
Case I used to make it portable and fit the display
https://makerworld.com/en/models/1336154-portable-pi-sdr-cas...
inventor7777
yesterday at 6:37 PM
I run BirdNET-Go as an app on my Home Assistant i7 M710q. I use the GPU-enabled BirdNET model and Perch V2, and it works swimmingly.
Input is three RTSP streams from various Reolink PoE cameras around our house, and it is pretty cool to be able to find and listen to the birds/frogs that come.
detourdog
yesterday at 7:02 PM
I have a situation with a couple of hundred chimney swifts. I want to set-up cameras to differentiate between individual swifts.
Any advice on how to go about this.
My current plan is to put multiple cameras at the mouth of the chimney opening which is about 42"x42"(1mx1m).
Does this sound realistic to anyone with experience?
sdenton4
yesterday at 9:41 PM
There's a growing literature on individual animal identification from sound!
Here's one example: https://github.com/sammlapp/ovenbird-individual-recognition
My impression is that the hardest part is knowing whether or not you're actually doing a good job. For vocal learners (like the ovenbird example linked above), it seems to be pretty easy using embeddings from existing models (like perch or birdnet). For non-learning species (possibly including your swifts), you can use timbre clues to differentiate many individuals, but may not be able to really nail down individual identity.
bradly
yesterday at 6:40 PM
Have you found a way to identify frogs? I also have a BirdNET (the older -PI, not -Go) setup, but haven't seen a way to get anything other than birds identified.
inventor7777
yesterday at 7:46 PM
The full Perch V2 model at https://huggingface.co/tphakala/Perch-v2 can do some frogs and cicadas and such, but it is not very good. It will certainly detect it, whether the species will be right is a whole other question.
oever
yesterday at 6:51 PM
The many frogs around my house are identified as black-crowned night heron. I was very excited for a while since that bird is not common where I live.
jameshart
yesterday at 7:23 PM
OHHHH! That explains it. Had not figured out why that false detection kept coming up.
oever
yesterday at 7:56 PM
The sound that a frog makes is 'kwak' in Dutch. And that is also the name of this bird which makes a similar sound. Onomatopoeia for the frog predator.
dewey
yesterday at 5:12 PM
Nice! I've tried to build something similar with Unifi cameras (https://github.com/dewey/birdhomie) and it worked pretty well, the species detection wasn't that accurate but I'll continue on that project in the winter.
entrep
yesterday at 7:52 PM
I just turned my PTZ security camera into a VAR booth for my kid. Lawn (soccer) / Driveway (Floorball) / End. Live view, step back 10s, slowmo, frame step, scrubbing.
GLM 5.3 helped to root my camera so I could get proper endpoints for PTZ and stream. Claude built the api and frontend, hosted on Home Assistant.
simenf
yesterday at 8:05 PM
Cool project!
Inspired by AvianVisitors [1] I made a similar project [2] with an android app for bird detection using Perch, and then displays the birds detected during the last 24 hours with nice art on a samsung frame tv in "art mode".
If you dont want to repurpose an old android device, my app also supports bird detections from birdnet-go and birdweather. It should be plug and play with this project.
Have a look at
[1] https://theodore.net/projects/AvianVisitors/
[2] https://github.com/simenf/birdframe
Thanks - this post reminded me to enter some sightings from yesterday into eBird (yes, another Cornell Lab birding app). A pair of rainbow bee eaters that I hadn't seen in the area before.
Came to say birdnet is fantastic but, at least in Australia, it regularly identifies calls with low probability (which are often wrong / skewed for location, but sometimes correct). Meaning you still need some wits about you. That said, it can correctly identify multiple birds in a single chorus which is cool. Just need to keep an eye out for those false positives.
doodlebugging
yesterday at 6:50 PM
I noticed the linked blog mentions birds and bats. I thought bat chirps required higher sample rates than the microphones normally use. I have an Audiomoth and to set it up for bats you need to use the highest sample rate for proper ID.
I like this project. I have been using security cams around my place to keep track of animals meandering across the property. It's the best use for an outdoor solar-powered webcam if you ask me. You can get a feel for which animal to expect based on time of day or other characteristics. You also recognize those who regularly visit. I have a one-eyed raccoon that has been showing up for almost two years now. It's a female and the last time she visited the monitored fountain she had 5 rambunctious raccoonlets.
Neywiny
yesterday at 6:51 PM
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aerodexis
yesterday at 6:30 PM
Been working on a similar project for doing animal behavioral analysis on cameras setup in a barn. I got YOLO running in real-time on several streams on a RTX4070. Managing the training data and doing DINO->YOLO distillation has me writing my own data management suite that I plan on OSing soon.
Core use-case : push a message every time my dog is eating my shoes.
anticorporate
yesterday at 5:04 PM
I'm thinking of making one of these for my wife as a holiday present: https://theodore.net/projects/AvianVisitors/
I like the idea of doing something with the timestamp of the recording, or highlighting new (or recently unheard) visitors.
KaiserPro
yesterday at 6:38 PM
I have this too, I was looking to get more automated call recognition after we spotted a pheasant in my (suburban) back garden. I was going to buy a dedicated mike, but then realised that birdnet go works with any rtsp audio stream.
I do need to tune the false positives though.
IneffablePigeon
yesterday at 8:18 PM
Wild that I could read this article, give DeepSeek about 4 sentences of prompts and have it running on my own homelab and unifi cameras in about 10 minutes.
The future mostly sucks but some parts are pretty cool.
arm32
yesterday at 5:07 PM
Love this project, I did something similar. The next step is building a custom frontend for it that’s exactly how your wife wants!
https://alec.is/posts/building-a-solar-powered-bird-station/
bradly
yesterday at 5:31 PM
Here is mine: https://birdymusic.com/
I'm also working on a little project that is a walnut frame with a waveshare eink display and esp32 that polls for latest detection and display the picture.
xattt
yesterday at 5:13 PM
Has your observation record reached a steady state, or are you regularly seeing unusual species?
arm32
yesterday at 5:28 PM
I’m at a very steady state now years into running a BirdNET-GO instance. Disclaimer: I’m a contributor to the project.
I’m a pretty unhinged sorta engineer, so I actually recently created a 24/7 weather TV channel that combines real-time bird alerts, weather radar, timelapses and a sky cam feed (just a UniFi camera mounted on my home’s roof PV).
https://www.youtube.com/live/sAC3o6KW2N0
Watchable from every TV in the house and shows the birds photo and name when it hears one. Whole thing is a single cursed FFMPEG command.
jasontucker
yesterday at 10:34 PM
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IncreasePosts
yesterday at 5:00 PM
> No waiting. No manual recording.
> No cloud services. No API calls.
> No subscription fees. No terms of service changes. No company shutting down the service in two years.
order-matters
yesterday at 6:17 PM
how confident is it in the identification? i imagine sometimes the angle is or resolution is bad and it may detect a bird but not have a lot to go off of to say what kind. does it narrow the list down or just make a guess?
tdb7893
yesterday at 6:24 PM
It looks like they are using audio. Even with poor audio on my phone I find that it works very well. Once in a blue moon I'll get an ID I am doubtful of from BirdNet but it's rare in my experience.
order-matters
yesterday at 7:35 PM
but the thing with AI is that it excels in creating things we would not doubt, regardless of the truth. in particular, i find it to be susceptible to avoiding doubt at the expense of truth.
though i would be hopeful for bird audio, as differentiating their calls is something the birds themselves excel at, so it could very well be a great usecase for ai
alansaber
today at 1:54 AM
Finally, ATC for my garden
tolerance
yesterday at 5:34 PM
I am imagining a Gary Larson strip about a flock of birds who are so not fond of this.
twilo
yesterday at 11:52 PM
Is it possible to run on macOS? I’m guessing docker
koinedad
yesterday at 7:23 PM
Really cool! The fart detector was a hilarious bonus
larodi
yesterday at 8:14 PM
Incredible! I never realized these models are open, always used them via the app. Project is top also!
scary-size
yesterday at 5:09 PM
Really nice project! Expected a visual ID system, surprised it was using audio. "Flock" would be a great name for the project...oh well!
toplinesoftsys
yesterday at 8:38 PM
Brilliant idea and fantastic project. New use for security cameras. I love it.
gberger
yesterday at 6:04 PM
https://xkcd.com/1425/
mcapodici
yesterday at 10:18 PM
Little did he know in 2026 you can feed that cartoon into AI and it will build you that app
jamesforestwest
yesterday at 6:11 PM
What an interesting and fun project. Now I want something similar too.
jp191919
yesterday at 7:12 PM
I'm pretty sure you can do this with Frigate as well.
toomuchtodo
yesterday at 4:50 PM
Super cool, could be plugged into https://www.earthcam.com/ for global bird tracking.
(i have a few https://www.birdweather.com/ devices strewn across North America and Europe because I am time poor and preferred a turnkey solution for those gifted to, but love the DIY efforts! no affiliation!)
goldie_wilson
yesterday at 10:30 PM
Finally a good use for Flock cameras. They're even named appropriately.
Aboutplants
yesterday at 5:31 PM
How do you like the bird weather device? I’m interested in a more turnkey solution as well
toomuchtodo
yesterday at 5:54 PM
I'm fairly satisfied with it and would recommend it to others who aren't interested in building their own solution. I like supporting the folks who are building it, although I'm unsure what the future looks like for the product. Could enshittify, could turn into Home Assistant Foundation [1] (which I also financially support). Time will tell. That's why I think its important to have open alternatives, similar to how one of the https://www.adsbexchange.com/ operators went rouge [2], sold to private equity, and others have filled the gap with new ADS-B network solutions.
[1] https://www.openhomefoundation.org/
[2] https://news.ycombinator.com/item?id=45582907 (citations)
simonjgreen
yesterday at 8:52 PM
I’ve been working on a similar project for the last few weeks in spare time.
I’m using a AudioMoth USB mic so I can capture extremely high sample rate and also ultrasonic for bat detections.
https://github.com/simonjgreen/OpenObservatory
Disclaimer: I’m also using this to see how far I can push supervised pure AI coding before it turns to mega slop, so know that before you dive in with the disparaging comments :D
enos_feedler
yesterday at 8:07 PM
just don't use it to catch a congressman being murdered over a privacy bill.
alexanderilg
yesterday at 7:33 PM
I love this, much better than AngryBirds. Truly an amazing idea!
sciencesama
yesterday at 5:46 PM
flock for family tracking and block for bird tracking may be !
DarmokTanagra
yesterday at 9:09 PM
can i turn this into a doorbell?
gverrilla
yesterday at 9:55 PM
I got a little bit into birds when I met the Merlin app. And I have thought about making a bird identification station, but I'm under the impression mostly the same species of birds visit where I live. I may be wrong though.
Yondle
yesterday at 11:16 PM
Alternative title: "My neighbour farted in my driveway, a technical overview"
shevy-java
yesterday at 8:21 PM
Humans who hate being spied on by the government and FacebookSpyGlasses, now spy on birds. We begin to understand how Skynet won this war ...
cindyllm
yesterday at 8:24 PM
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dfxm12
yesterday at 8:13 PM
This would be more interesting with video rather than audio, no? I guess it depends where your security cameras are. Are there options for that as well?
contingencies
yesterday at 5:22 PM
110 detections over 7 days? Here in Sydney I would expect >110 detections per day!
zucked
yesterday at 6:15 PM
I've done essentially the same thing before (using my existing Go2RTC and Frigate setup) but the challenge I ran into is that the microphones on my cameras just aren't very good.
deepvibrations
yesterday at 6:11 PM
You can adjust which detections are accepted based on confidence level, so it might be that the settings are very strict.
contingencies
yesterday at 10:03 PM
Two rainbow lorikeets just had sex 2m from my breakfast table. I think there's a substantive distinction in avian fauna density.
minimaltom
yesterday at 6:07 PM
Hell yeah a birdie over thirty, with a splash of tech!
(you either go the path of a burner or a birdie, I don't make the rules)
creamedpeas
yesterday at 9:23 PM
I love AI. Thank you for such great software, anybody can do it now! Just like making videos, songs, pictures, stories, etc. What a great time to be alive! Oh, and F China for trying to sabotage our data center buildouts by leveraging useful idiots.
atoav
yesterday at 9:27 PM
Ot to rain on your parade. But I made videos, songs and pictures, wrote stories back in ca. 2006 when I was 16 and read my first AI book. Without AI.
I see AI as a useful tool, but doing art with it is extremely bland compared to the real thing. I can't eben begin to describe what people who let the machine do the art miss out on.
pranav_tech26
yesterday at 11:42 PM
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jasontucker
yesterday at 7:19 PM
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Jefmz
yesterday at 8:26 PM
[flagged]
jayshah5696
yesterday at 8:30 PM
[flagged]
LIMEVINCE
yesterday at 5:20 PM
In the non-fucked up timeline where Hilary won in 2016, Flock cameras is a nationwide network of automatic bird identification cameras to track bird population and migration.
CamperBob2
yesterday at 5:40 PM
[flagged]
LIMEVINCE
yesterday at 6:12 PM
I don't love it either, but it's better than the alternative of Peace President(tm) -- famous for strokes of genius such as "can't we just shoot [the protestors] in the legs"; asking the military to "shoot missiles into Mexico to destroy the drug labs; and the masterful decision to deny Iran nuclear weapons by withdrawing from the JCPOA and joining Israel in waging an illegitimate war.
Edit: Wow that's insane that your comment was flagged.
CamperBob2
yesterday at 9:29 PM
It sounds like a "both sides" argument, which should indeed be flagged early and often. It's not, though.
I'd still vote for her over the alternative the Republicans chose to offer to us (and did so). It was the only responsible thing to do.
dhosek
yesterday at 5:49 PM
Come on man, let us have a nice little alternate universe without peeing in our Cheerios.
ha, now imagine some hacker changing all the Flock firmware nationwide to do bird identification too
would have been a great Mr. Robot episode
dylan604
yesterday at 5:20 PM
My cat wants to know who/where does one ask to request to have a specific bird located?
dhosek
yesterday at 5:50 PM
Sorry, no luck tracking down your ex-girlfriend, but we do have a line on an ivory-billed woodpecker.
dosman33
yesterday at 7:07 PM
Lol, nice. Does an audio recording of an ivory-billed exist?
nephihaha
yesterday at 6:58 PM
Flock would live up to its name.
nautilus12
yesterday at 5:09 PM
I get jealous of people that have the luxury of time to do things like this
maciejb
yesterday at 10:25 PM
My setup took maybe ~4-8h of initial work. All with the help of Codex: code, configuration, even figuring out which equipment to buy.
IncreasePosts
yesterday at 5:34 PM
I just used AI(antigravity with gemini 3.6 flash, but i'm sure many others would work) to implement this and integrate it with my security cameras after reading the blog post 26 minutes ago. I suspect the author did the same thing. I also had it steal the idea from the AvianVisitors link in this thread and it displays a generated collage of the recently detected birds.
jasontucker
yesterday at 10:19 PM
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