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Arthur

@arthurdearaujo.com

full-stack iOS engineer • bird enthusiast • amateur photographer ex-founder, ex-twitter • 26, they/him https://birdsky.app

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Latest posts by Arthur @arthurdearaujo.com

i’m on it!! 😊 stay tuned 🤖

10.07.2025 00:24 👍 1 🔁 0 💬 1 📌 0
Birdsky post showing an image of a Goldfinch (yellow and black bird with orange beak). Below the image is a Goldfinch species label highlighted in blue with it's latin name below it. Post Text "These goldfinches are just gorgeous!".

Birdsky post showing an image of a Goldfinch (yellow and black bird with orange beak). Below the image is a Goldfinch species label highlighted in blue with it's latin name below it. Post Text "These goldfinches are just gorgeous!".

Birdsky Explore page showing posts with a photo of a great horned owl, a mourning dove, and a black-crested coquette.

Birdsky Explore page showing posts with a photo of a great horned owl, a mourning dove, and a black-crested coquette.

Alongside this update, I've also been working on an Android version using skip.tools

09.07.2025 23:11 👍 5 🔁 0 💬 1 📌 0
Video thumbnail

New Birdsky update is live! 🚀
apps.apple.com/us/app/birds...

• Added Finnish and other language support
• Added Latin scientific binomial names
• Other fixes and improvements

Special thanks to @pavevaisanen.bsky.social! Most of this update is a result of their feedback.

#Birding #Birds #Birdsky

09.07.2025 23:11 👍 13 🔁 0 💬 1 📌 2
Preview
my very first big bird. I’ve only captured two big bird spe… my very first big bird. I’ve only captured two big bird species so far, gotta catch ‘em all! 🦅 🆔 Cooper's Hawk 📌 Liberty State Park, Jersey City 📸 Nikon D500 | Sigma 150mm - 600mm 🗓️ November 16, 20…

birdsky.app/profile/arth...

09.07.2025 01:26 👍 1 🔁 0 💬 0 📌 0
Black-and-white photo of a hawk looking leftward on a high branch. Hawk has remarkable rain-drop polka-dot chest feathers and a set of piercing claws.

Black-and-white photo of a hawk looking leftward on a high branch. Hawk has remarkable rain-drop polka-dot chest feathers and a set of piercing claws.

my very first big bird. I’ve only captured two big bird species so far, gotta catch ‘em all! 🦅

🆔 Cooper's Hawk
📌 Liberty State Park, Jersey City
📸 Nikon D500 | Sigma 150mm - 600mm
🗓️ November 16, 2024

#Hawk #Birding #Birds #Birdsky

09.07.2025 01:26 👍 6 🔁 0 💬 1 📌 0
Great Blue Heron standing on a branch looking leftward. Branch is hovering over the water with half of the branch bark stripped bare. Background is of leaves, branches and rocks.

Great Blue Heron standing on a branch looking leftward. Branch is hovering over the water with half of the branch bark stripped bare. Background is of leaves, branches and rocks.

my first big bird in central park 🐦

🆔 Great Blue Heron
📌 Central Park, New York
📸 Nikon D500 | Sigma 150 - 600mm
🗓️ July 6, 2025

#GreatBlueHeron #Birds #Birding #Birdsky

08.07.2025 00:11 👍 8 🔁 0 💬 1 📌 0

For long list of bird names, good point I shall constrain the species list height. It can definitely get long and look weird with a lot of white space. Thanks again, I appreciate the feedback!

07.07.2025 23:40 👍 1 🔁 0 💬 0 📌 0

Would be cool if #MerlinBirdApp @birdsoftheworld.bsky.social released their image model or an API

07.07.2025 23:40 👍 1 🔁 0 💬 1 📌 0

Agree, image species detection could be ideal however, there’s technical limitation - I don’t have access to a reliable bird species classification model. There's some open-source but only achieves a small subset of 512 species detection, too small to be useful for Birdsky with 11k potential species

07.07.2025 23:40 👍 1 🔁 0 💬 1 📌 0

You’re right I can see that, I shall add a settings option for only scientific/both/off

07.07.2025 23:22 👍 0 🔁 0 💬 0 📌 0
Video thumbnail

• Added scientific names ✅
• Translated to Finnish and other languages ✅

I appreciate the great feedback! 🙏🏼 Will be added to the next Birdsky update.
Feel free to share any other issues or ideas

05.07.2025 21:44 👍 0 🔁 0 💬 1 📌 0
Rainbow sparkly fireworks above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

Rainbow sparkly fireworks above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

Two blue sphere with red edges sparkly fireworks above the Hudson river, river reflecting some of its purple-ish light. Small yellow boxy lights from skyscraper building on the left and some below.

Two blue sphere with red edges sparkly fireworks above the Hudson river, river reflecting some of its purple-ish light. Small yellow boxy lights from skyscraper building on the left and some below.

Two bright yellow sphere sparkly fireworks above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

Two bright yellow sphere sparkly fireworks above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

Two big blue flower-like fireworks with yellow sphere center above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

Two big blue flower-like fireworks with yellow sphere center above the Hudson river, river reflecting some of its light. Small yellow boxy lights from skyscraper building on the left and some below.

last night downtown NYC 🎆 from Jersey City rooftop

05.07.2025 18:51 👍 2 🔁 0 💬 0 📌 0
Screenshot of Birdsky app showing a social feed post of a bird. The photo displays a Song Thrush bird facing the camera on the edge of a bird bath. Below the photo includes blue bubbles with text showing bird species - Song Thrush, Starling, Magpie and their latin names below each.

Screenshot of Birdsky app showing a social feed post of a bird. The photo displays a Song Thrush bird facing the camera on the edge of a bird bath. Below the photo includes blue bubbles with text showing bird species - Song Thrush, Starling, Magpie and their latin names below each.

Screenshot of Birdsky app showing a social feed post of a bird. The photo displays a Greylag Goose birds facing leftward of camera next to a river and brilliant green plants. Below the photo includes blue bubbles with text showing bird species - Grelag Goose, the latin name "Anser Anser" below and Location "Connaught Water, Chingford"

Screenshot of Birdsky app showing a social feed post of a bird. The photo displays a Greylag Goose birds facing leftward of camera next to a river and brilliant green plants. Below the photo includes blue bubbles with text showing bird species - Grelag Goose, the latin name "Anser Anser" below and Location "Connaught Water, Chingford"

You got it! How does this look?

29.06.2025 20:08 👍 1 🔁 0 💬 1 📌 0
Skip Skip brings SwiftUI app development to Android

Yes, currently working on it! Building with skip.tools

29.06.2025 03:36 👍 1 🔁 0 💬 0 📌 0

Haha go birds! 😄 Likewise :)

28.06.2025 04:38 👍 1 🔁 0 💬 0 📌 0

Would be an honor! Cheers!

28.06.2025 04:34 👍 1 🔁 0 💬 1 📌 0

Thank you!! It’s displaying content with custom filtering, it actually has a Bsky custom feed as well:
bsky.app/profile/arth...

I have a set of servers running a machine learning model to analyze Bsky photos in real-time, determining if it is a bird. Doing some other processing on text as well

28.06.2025 04:34 👍 2 🔁 0 💬 1 📌 0

And shout-out to the original custom bird feed creator 🙏🏼 @daryllmarie.bsky.social

28.06.2025 02:15 👍 3 🔁 0 💬 0 📌 0

Shout-outs to the Bluesky 3rd-party app pioneers! 🙏🏼
@skylight.social @buildwithtori.com @reedharmeyer.bsky.social @flashes.blue @seabass.bsky.social

Shout-outs to the giants we’re building on! 🙏🏼
@bsky.app @atproto.com @jay.bsky.team @pfrazee.com @why.bsky.team @rose.bsky.team

28.06.2025 02:15 👍 10 🔁 1 💬 2 📌 0
An app store screenshot with title "Beautiful Birds Posted Every Day" and subtitle "Beautiful, bold, sometime too hip". The iPhone screenshot below shows two Agami Heron birds next to eachother in greenery in an instagram-style social feed. It displays Birdsky logo branding,

An app store screenshot with title "Beautiful Birds Posted Every Day" and subtitle "Beautiful, bold, sometime too hip". The iPhone screenshot below shows two Agami Heron birds next to eachother in greenery in an instagram-style social feed. It displays Birdsky logo branding,

An app store screenshot with title "Connect with Local Birding" and subtitle "Explore nearby birds and community". The iPhone screenshot below shows a list of rows with bird photos and text. The text includes the distance from bird 7 miles away, the bird species, and the bird post text. Photo also displays Birdsky logo branding

An app store screenshot with title "Connect with Local Birding" and subtitle "Explore nearby birds and community". The iPhone screenshot below shows a list of rows with bird photos and text. The text includes the distance from bird 7 miles away, the bird species, and the bird post text. Photo also displays Birdsky logo branding

An app store screenshot with title "Curated Birder Context" and subtitle "Species, Camera Gear, Date, Location". The iPhone screenshot below shows a social media post in instagram-style format, the post image is a white Dalmatian Pelican bird on some dirt with rocks nearby. There is blue highlighted text on the left-hand side which include the bird species (Dalmation Pelican), the camera gear (Canon EOS R5), lens (Sigma 150-600mm), and location (Utah, USA). Photo also displays Birdsky logo branding

An app store screenshot with title "Curated Birder Context" and subtitle "Species, Camera Gear, Date, Location". The iPhone screenshot below shows a social media post in instagram-style format, the post image is a white Dalmatian Pelican bird on some dirt with rocks nearby. There is blue highlighted text on the left-hand side which include the bird species (Dalmation Pelican), the camera gear (Canon EOS R5), lens (Sigma 150-600mm), and location (Utah, USA). Photo also displays Birdsky logo branding

An app store screenshot with title "Actionable Birder Context" and two subtitles "Species links to wikipedia.org or allaboutbirds.org bird page" and "Audio link to macaulaylibrary.org CornellLab bird recording". These subtitles have a white arrow pointing to the top right audio button and highlighted blue text bird species button. The iPhone screenshot below shows a social media post in instagram-style format, the post image is a white Dalmatian Pelican bird on some dirt with rocks nearby. There is blue highlighted text on the left-hand side which include the bird species (Dalmation Pelican), the camera gear (Canon EOS R5), lens (Sigma 150-600mm), and location (Utah, USA). Photo also displays Birdsky logo branding

An app store screenshot with title "Actionable Birder Context" and two subtitles "Species links to wikipedia.org or allaboutbirds.org bird page" and "Audio link to macaulaylibrary.org CornellLab bird recording". These subtitles have a white arrow pointing to the top right audio button and highlighted blue text bird species button. The iPhone screenshot below shows a social media post in instagram-style format, the post image is a white Dalmatian Pelican bird on some dirt with rocks nearby. There is blue highlighted text on the left-hand side which include the bird species (Dalmation Pelican), the camera gear (Canon EOS R5), lens (Sigma 150-600mm), and location (Utah, USA). Photo also displays Birdsky logo branding

Hey everyone,
Excited to share that my new app Birdsky is officially live! 🚀

Birdsky is a Bluesky app built just for birders:
apps.apple.com/us/app/birds...

There are 1,000+ new bird photos posted every day 🐦

Give it a gander and share with your bird-loving friends!
#FeatherFriday #Birding #Birds

28.06.2025 02:10 👍 25 🔁 1 💬 5 📌 0
sun shining on a Gray Catbird looking rightward, standing on a wooden post. blurry green tree background and some leaves in focus on the left

sun shining on a Gray Catbird looking rightward, standing on a wooden post. blurry green tree background and some leaves in focus on the left

🆔 Gray Catbird
📸 D500 | Sigma 150mm - 600mm
🗓️ June 22, 2025
📍 Liberty State Park 🗽

23.06.2025 19:58 👍 13 🔁 0 💬 1 📌 0
Great Blue Heron on ice

Great Blue Heron on ice

test

23.05.2025 04:37 👍 28 🔁 0 💬 2 📌 0

Did you know you can control who can reply to your posts? We also recently added an option for you to choose a default setting for all future posts.

25.02.2025 01:16 👍 2035 🔁 328 💬 136 📌 13
Ev Williams, the billionaire who co-founded Twitter and Medium, is sad. To fight that sadness, Williams is doing the only thing he knows how: launching a new app.

Ev Williams, the billionaire who co-founded Twitter and Medium, is sad. To fight that sadness, Williams is doing the only thing he knows how: launching a new app.

I’ve never resonated more with a billionaire. gizmodo.com/twitter-co-f...

14.12.2024 15:04 👍 75 🔁 9 💬 2 📌 1

😊🙏🏼

30.04.2023 01:26 👍 16 🔁 0 💬 1 📌 0

i’m more like a priestess going around spreading the gospel of decentralization by setting up a nice city-state and convincing people who move here to set up their own. the key to them not turning into awful empires again is we’ll have passports and property rights that let us move between them!

29.04.2023 06:52 👍 269 🔁 30 💬 12 📌 3

welcome to skeetington!

29.04.2023 04:56 👍 1 🔁 0 💬 0 📌 0

from my bluesky proposal presented to twitter back in 2021.

graphic design is my passion

12.04.2023 05:05 👍 538 🔁 124 💬 37 📌 15