Radiant Birds is an add-on for Fallout 4. It contains custom sounds for various birds that were recorded by the developers. It also adds volume to these sounds, making them more noticeable.

The main goal of this addon is to make the birds more realistic. The developers decided to do this by recording real sounds, instead of using pre-recorded sounds that are usually in the game.

It's a simple and easy-to-use mod for Fallout 4 that doesn't require any technical knowledge to install and use.