HKcBirds: Common Birds of Hong Kong is a free cross-platform bird information app that provides multimedia information about common birds in Hong Kong. The app is developed by The Hong Kong Bird Watching Society and the Department of Computer Science at The University of Hong Kong. The app is a part of the project titled "Birds of Hong Kong in Your Hands" supported by the HKU Knowledge Exchange Fund.

The app offers detailed information about over 200 bird species seen in Hong Kong, with over 600 photographs and more than 50 bird calls. The app also features bird call visualization by waveform and spectrogram. The app can be used offline, and it supports English and Traditional Chinese. Users can search birds by their common names, scientific names, and other names. Additionally, they can filter the bird list by family, IUCN status, principal status, habitat, and size. The app also provides general tips and information about bird watching. The app is ad-free, but it contains hundreds of media files and is large in size (about 957 MB). Sufficient storage space is required to install the app.