The library consists of 30 recordings available as stereo and surround. These recordings make excellent backgrounds for realistic scenarios, but can also be employed to raise tension or create unease. The general tone ranges from mysterious, strange and unsettling to downright desolate, oppressive and gloomy. The birds featured are ubiquitous enough so that they don’t anchor the recordings in a specific location or time. There are no chirps and tweets, just croaks, barks, wails and howls.