百鸟记 vs BirdTrace

「百鸟记」是一款专为鸟类爱好者设计的知识学习工具，有点像“鸟类版”的多邻国。无论你是观鸟新手，还是热爱自然的探索者，都能在这里系统地学习识鸟技巧。 我们采用先进的记忆算法科学规划学习节奏，配合四选一测验机制，让你像背单词一样轻松掌握鸟类特征与辨识技巧。 收录全国1500种鸟类，配有多张高清照片与清晰鸣声，课程依照中国动物地理分区组织，帮助你循序渐进，逐步成为识鸟高手。 百鸟记，不只是识别工具，更是你系统学习鸟类知识的贴身伴侣。百鸟记，不止是识别工具，更是系统学习鸟类知识的伴侣。

BirdTrace is a free, privacy-focused app for birdwatchers and wildlife photographers. Identify birds by sight or sound with on-device AI, keep personal sighting records, and explore the remarkable world of bird migration, conservation and cultural stories. NEW IN 4.0 — OFFLINE BIRD SOUND IDENTIFICATION Hear a bird but can't see it? Let BirdTrace listen. With the new Sound ID, simply tap Start Recording to capture 10 seconds of birdsong. Watch the live audio waveform respond to the sounds around you. When recording finishes, BirdTrace automatically analyzes two five-second segments using Google Perch 2.0 and presents possible bird species. Location and seasonal information can help refine the results when available. Multiple birds may appear, each linked to BirdDex. The sound recognition model is an optional one-time download of approximately 192 MB. Once installed, Sound ID works offline. Recordings are processed temporarily on your iPhone, never uploaded, and not saved as audio files. FOUR WAYS TO IDENTIFY BIRDS Choose the recognition method that suits the moment: • AR Recognition (Beta) — Identify birds through your live camera view, with detection brackets, bilingual species names and tap-to-lock tracking. • Camera Recognition — Photograph birds using supported native camera zoom, focus and exposure controls. • Photo Library Recognition — Identify birds in existing photos, with automatic subject detection and multi-bird selection. • Sound Identification — Record 10 seconds of bird vocalizations for automatic, on-device recognition. All four methods are conveniently arranged in the Records screen. PRIVATE, ON-DEVICE AI RECOGNITION BirdTrace's FastViT visual recognition model covers 10,480 bird classes. Core image recognition runs on your device without sending photos to a remote AI identification service. Google Perch 2.0 powers Sound ID, analyzing audio locally with optional geographic and seasonal ranking. Microphone recordings are not transmitted to a server or permanently stored. GLOBAL BIRDDEX — 11,171 ENTRIES Explore 11,171 bird entries with Chinese, English and scientific names, taxonomy, species introductions, distribution information and IUCN conservation status. BirdDex contains 11,171 entries; visual AI recognizes 10,480 classes. 52-WEEK MIGRATION ATLAS Discover the seasonal movements of birds through interactive 3D maps and a 52-week playback timeline. Explore modeled population distributions across breeding, migration, non-breeding and resident periods. Search by Chinese, English or scientific name, and download supported migration maps for offline exploration. Maps show modeled populations, not live GPS tracks. 1,378 BILINGUAL CULTURAL STORIES Discover how birds have inspired mythology, folklore, literature, religion, art and history. Explore 1,378 cultural stories in Chinese and English, enriched with references and contextual notes. BIRD CARDS AND SHARING Turn your photographs into beautiful bird cards featuring bilingual names, scientific names, taxonomy and brief introductions. Adjust the composition, save to Photos or share with friends. PERSONAL RECORDS AND NEARBY DISCOVERY Keep your birdwatching memories with photographs, dates, locations and field notes. Search your saved records and explore birds that may occur nearby. Core recognition works offline after the necessary model setup. Internet access may be required for initial model activation, optional Sound ID model downloads, online information, migration data and iCloud-backed photos. AR Recognition remains a beta feature. Identification accuracy and performance vary with species, device, recording quality and environmental conditions. Discover birds by sight. Recognize them by sound. Explore the stories behind them.