BirdTrace 3.2.2 • Corrected Bird Names and Catalog Data Improved BirdDex accuracy and consistency, including corrections to 26 Chinese bird names across the encyclopedia, identification results, and sharing cards. • Consistent Migration Atlas Colors The map and annual timeline now use matching colors for breeding, migration, non-breeding, and resident phases. • Improved Dark Mode Visibility Unassigned phases now appear in yellow for easier visibility. Spatial-review status remains available as a separate notice. Special thanks to 般般兽 for the helpful suggestions that contributed to this update. BirdTrace 3.2 • Reimagined Culture & Stories All 1,000 existing entries have been rewritten, with 378 new stories added. Explore a collection of 1,378 stories in Chinese and English, bringing birds’ connections with mythology, folklore, literature, and history to life. • References After Every Story Find supporting sources and useful cultural notes directly after each story for further reading and exploration. • New Collectible-Style Bird Cards Tap the top-right share button in a BirdDex entry to automatically create a bird poster featuring its photo, Chinese and English names, Latin scientific name, classification from kingdom to species, and a brief introduction. • Save and Share Save your card to Photos or send it through available apps such as WeChat and Telegram using the system share sheet. BirdTrace 3.1 • Upgraded the on-device AI model for improved bird identification accuracy and reliability. • Added cultural stories exploring birds’ connections with mythology, folklore, religion, symbolism, and history. • Enriched the BirdDex reading experience and improved the interface and stability. BirdTrace 3.0 • Introduced a global 52-week migration atlas for exploring seasonal changes in modeled bird population distributions. • Combined on-device visual recognition with geographic context to prioritize species relevant to your birding location. • Upgraded the recognition model while keeping core identification private and available offline. • Added migration search by Chinese name, English name, or scientific name, with species-by-species data downloads for later reuse. • Improved migration-map rendering, map and location support, and system compatibility. Thank you for discovering birds, recording encounters, and exploring their stories with BirdTrace.

BirdTrace 3.2.1 • Corrected bird names and BirdDex catalog data for improved accuracy and consistency. BirdTrace 3.2 • Reimagined Culture & Stories All 1,000 existing entries have been rewritten, with 378 new stories added. Explore a collection of 1,378 stories in Chinese and English, bringing birds’ connections with mythology, folklore, literature, and history to life. • References After Every Story Find supporting sources and useful cultural notes directly after each story for further reading and exploration. • New Collectible-Style Bird Cards Tap the top-right share button in a BirdDex entry to automatically create a bird poster featuring its photo, Chinese and English names, Latin scientific name, classification from kingdom to species, and a brief introduction. • Save and Share Save your card to Photos or send it through available apps such as WeChat and Telegram using the system share sheet. BirdTrace 3.1 • Upgraded the on-device AI model for improved bird identification accuracy and reliability. • Added cultural stories exploring birds’ connections with mythology, folklore, religion, symbolism, and history. • Enriched the BirdDex reading experience and improved the interface and stability. BirdTrace 3.0 • Introduced a global 52-week migration atlas for exploring seasonal changes in modeled bird population distributions. • Combined on-device visual recognition with geographic context to prioritize species relevant to your birding location. • Upgraded the recognition model while keeping core identification private and available offline. • Added migration search by Chinese name, English name, or scientific name, with species-by-species data downloads for later reuse. • Improved migration-map rendering, map and location support, and system compatibility. Thank you for discovering birds, recording encounters, and exploring their stories with BirdTrace.

BirdTrace 3.2 • Reimagined Culture & Stories All 1,000 existing entries have been rewritten, with 378 new stories added. Explore a collection of 1,378 stories in Chinese and English, bringing birds’ connections with mythology, folklore, literature, and history to life. • References After Every Story Find supporting sources and useful cultural notes directly after each story for further reading and exploration. • New Collectible-Style Bird Cards Tap the top-right share button in a BirdDex entry to automatically create a bird poster featuring its photo, Chinese and English names, Latin scientific name, classification from kingdom to species, and a brief introduction. • Save and Share Save your card to Photos or send it through available apps such as WeChat and Telegram using the system share sheet. BirdTrace 3.1 • Upgraded the on-device AI model for improved bird identification accuracy and reliability. • Added cultural stories exploring birds’ connections with mythology, folklore, religion, symbolism, and history. • Enriched the BirdDex reading experience and improved the interface and stability. BirdTrace 3.0 • Introduced a global 52-week migration atlas for exploring seasonal changes in modeled bird population distributions. • Combined on-device visual recognition with geographic context to prioritize species relevant to your birding location. • Upgraded the recognition model while keeping core identification private and available offline. • Added migration search by Chinese name, English name, or scientific name, with species-by-species data downloads for later reuse. • Improved migration-map rendering, map and location support, and system compatibility. Thank you for discovering birds, recording encounters, and exploring their stories with BirdTrace.

BirdTrace 3.0 is our biggest exploration update yet. • Global 52-Week Migration Atlas Explore modeled bird population distributions across all 52 weeks of the year and watch seasonal ranges change through breeding, migration, non-breeding, and resident periods. • Location-Aware Identification BirdTrace can combine on-device visual recognition with geographic context to prioritize species that are more relevant to where you are birding. • Upgraded On-Device Recognition The production bird recognition model has been upgraded while keeping recognition private and on-device. • Offline-Friendly Experience Core bird identification works locally, and downloaded migration data can be stored on your device for later reuse. • Migration Search & Downloads Search supported species by English name, Chinese name, or scientific name and download migration data species by species. • Improved Map & Location Support Refined Migration rendering, MapKit integration, geographic information, and compatibility with the latest iOS SDKs. Thank you for using BirdTrace and exploring the world of birds with us. BirdTrace 3.1 BirdTrace 3.1 brings stronger bird identification and a richer BirdDex experience. Upgraded the AI bird identification model for improved accuracy and reliability Added cultural stories for more than 1,000 bird species, covering mythology, folklore, religion, symbolism, history, and traditional culture Expanded BirdDex so each identification can reveal not only what a bird is, but also the stories and traditions behind it Improved overall interface experience and stability We’ll continue improving BirdTrace with better recognition models, richer bird data, and more detailed BirdDex content.

BirdTrace 3.0 is our biggest exploration update yet. • Global 52-Week Migration Atlas Explore modeled bird population distributions across all 52 weeks of the year and watch seasonal ranges change through breeding, migration, non-breeding, and resident periods. • Location-Aware Identification BirdTrace can combine on-device visual recognition with geographic context to prioritize species that are more relevant to where you are birding. • Upgraded On-Device Recognition The production bird recognition model has been upgraded while keeping recognition private and on-device. • Offline-Friendly Experience Core bird identification works locally, and downloaded migration data can be stored on your device for later reuse. • Migration Search & Downloads Search supported species by English name, Chinese name, or scientific name and download migration data species by species. • Improved Map & Location Support Refined Migration rendering, MapKit integration, geographic information, and compatibility with the latest iOS SDKs. Thank you for using BirdTrace and exploring the world of birds with us. BirdTrace 3.0.1 • Added real-time progress for Migration data downloads, including percentage and transferred data size. • Improved Migration download, installation, and status feedback. • Improved stability and system compatibility.

BirdTrace 3.0 is our biggest exploration update yet. • Global 52-Week Migration Atlas Explore modeled bird population distributions across all 52 weeks of the year and watch seasonal ranges change through breeding, migration, non-breeding, and resident periods. • Location-Aware Identification BirdTrace can combine on-device visual recognition with geographic context to prioritize species that are more relevant to where you are birding. • Upgraded On-Device Recognition The production bird recognition model has been upgraded while keeping recognition private and on-device. • Offline-Friendly Experience Core bird identification works locally, and downloaded migration data can be stored on your device for later reuse. • Migration Search & Downloads Search supported species by English name, Chinese name, or scientific name and download migration data species by species. • Improved Map & Location Support Refined Migration rendering, MapKit integration, geographic information, and compatibility with the latest iOS SDKs. Thank you for using BirdTrace and exploring the world of birds with us.

BirdTrace 2.2 brings major improvements to bird identification and species information: Upgraded to a more powerful on-device bird recognition model for improved identification performance. Added IUCN conservation status information to help you better understand each species’ global conservation level. Improved location support when recording and identifying birds, making sightings easier to organize by place. Improved the reliability and overall experience of photo-based bird identification. Additional performance and stability improvements throughout the app. We will continue refining BirdTrace’s recognition capabilities and species data in future updates.

BirdTrace 2.1 brings two important improvements: • You can now select photos directly from your photo library, making it easier to create new records • The Achievement system has been significantly optimized for faster progress updates, quicker loading, and improved stability We’ve also fixed several known issues and improved the overall experience.

BirdTrace 2.0 is a major update: • Expanded the BirdDex to cover 11,171 bird species worldwide • Added and improved bilingual bird encyclopedia content • Added information covering identification, habitat, distribution, behavior, diet, and breeding • Added conservation status labels for relevant bird species in China • Redesigned the achievement system with more collection and exploration milestones • Improved species pages, the BirdDex, and achievement layouts across different screen sizes • Improved image processing for portrait photos and bird identification • Fixed an issue that could prevent manually saved records from opening the correct species page • Improved species-name matching, navigation, and data loading • Enhanced overall stability and usability Thank you for using BirdTrace. Start exploring a more complete global BirdDex today.

BirdTrace 1.1 delivers a more accurate and reliable bird identification experience. * Improved the bird identification model, increasing accuracy by approximately 2% * Fixed known issues * Enhanced overall performance and stability