The dawn chorus of birdsong is both a welfare indicator and a welfare measure — thriving bird populations singing in complex, species-rich choruses signal healthy habitats where birds have the resources needed for good welfare and reproduction.
The dawn chorus is one of the most accessible indicators of ecological welfare for non-specialists. A rich, complex chorus of many overlapping bird species signals a habitat where birds are well-fed, reproductively successful, and living in environments that meet their needs. A thin, species-poor chorus signals habitat degradation and population decline that translates directly to reduced welfare for the remaining birds through food scarcity, poor nesting success, and higher predation pressure. Listening to and recording the dawn chorus connects people to local wildlife welfare in an immediate sensory way that abstractions about biodiversity cannot achieve.