TrailWing app identifies bird calls offline using open-source AI model Gemma 3n

TrailWing is an open-source mobile application designed for birdwatchers in areas without cellular service. Users download location-specific data packs containing local bird species and weather forecasts before heading outdoors. The app then uses the Gemma 3n open-weight AI model on the device to analyze short audio recordings and identify birds. It provides identification confidence percentages and sighting confirmation tips without requiring an internet connection. The application targets beginner and intermediate birders who want to avoid sharing their location data with remote servers.