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Birds of Sao Tome and Principe
Learn to identify the birds of Sao Tome and Principe yourself. The Birdr list has 147 species—photo quizzes and a Country Challenge take you from distinctive beginners to harder lookalikes.
Best on the iPhone and Android apps.
A one-off quiz is a short session on this country’s list. A Country Challenge is structured practice with levels, so you keep meeting new birds instead of repeating only the easy ones.
How can I help?
Birdr is a small project. Honest feedback, spotting the wrong bird, writing comparison descriptions for lookalike species, and telling other birders all help. You can also donate, or get in touch if you have ideas for how to fund Birdr or want to discuss a partnership.
During a quiz, tap Flag if the photo, video or sound is not the species shown—or is otherwise unusable. That skips the clip in your game and reports it so we can take it out of the set.
A large part of the picture library is still waiting for review. If you know a country’s birds, open Review photos below and approve or reject images a few at a time.
Comparison pages still rely on AI text until someone who knows the birds writes a better one. Open a lookalike pair from Species, then use Write a better description.
Review photos
Quizzes are only as good as the pictures, and many still have not been checked. Help by approving good photos and rejecting the wrong bird—start with any country, or the birds you know best.
Write comparisons
Species pages link to lookalikes that people mix up. If you know those birds, you can replace the AI text with a description that actually helps others tell them apart. You need to be signed in.
Spread the word
Birdr grows when birders tell other birders. Mention it in a club newsletter, a WhatsApp group, or after a field trip. Clubs can also start a Flock and play the same quiz.
Leave a store review
If you use the iPhone or Android app, a rating is one of the simplest ways to help. It tells other birders the quiz is worth trying.
Support Birdr
Birdr is free, open source, and built in spare time. There is no funding behind it right now. A GitHub sponsorship helps cover hosting and AI credits so the quiz can stay free.
Donating is one way. If you have another idea for how to fund Birdr—a partnership, a grant, a club, a company—write to info@birdr.pro. I would like to talk.