Oiseaux.net is a volunteer-maintained ornithological portal dedicated to describing and illustrating bird species from around the world. Its aim is to make bird knowledge freely available, without advertising, to beginners and experienced birdwatchers alike. The site offers species accounts with information about birds’ appearance, habitat, behaviour and other characteristics, supported by photographs and recordings of their songs and calls. Visitors can browse bird lists by region, explore photographers’ galleries and read features and news about ornithology and birdlife.

For people identifying a bird, Oiseaux.net provides search tools that use criteria such as location and size, an artificial-intelligence feature for recognizing European species from photos, and a community forum where users can share observations for help. Learning resources include identification guides, a glossary and nomenclature information. The portal also makes learning interactive through bird and birdsong quizzes, a mystery-bird challenge, puzzles and other games. Additional sections cover topics such as helping birds and ethical rules.