HKBirds: Birds of Hong Kong

HKBirds: Birds of Hong Kong is a comprehensive offline bird guide for Hong Kong, bringing authoritative species information and multimedia to your fingertips. It runs without internet access and includes over 240 species, 650+ photos, and 80 bird calls with waveform and spectrogram visualizations.

Key features include offline access, search by common or scientific names, filters by family, habitat and size, sorting by multiple taxonomic fields, and the ability to record sightings. The app supports English and Traditional Chinese, works on iPhone and iPad, offers light/dark mode, and is ad-free. It’s a large dataset (about 680 MB) and does not require internet once downloaded.