A long-tailed warbler that moves through low shrubs and feeds on small insects. In Britain it is found on heathland.
Its head, body, and wings are gray-brown, with a red eye ring and a russet breast.
Researchers tested a photographic method for studying nest materials, comparing image-based estimates with nests that were dismantled. The sample included 20 Dartford Warbler nests and 45 Blue Tit nests. The method measured the proportions of materials used in each nest.
For grass, heather and moss, the proportions estimated from photographs matched the dismantling results. The methods differed for rarer animal-derived materials. After an initial calibration, photographs can also support study of archived nests and nests that are difficult to access.
An extinction-risk assessment has not been added yet.
At a central Italian heathland, Dartford Warbler abundance declined in reference areas before recovering in the final two years, while remaining more stable in treatment areas. Greater extent of vegetation treated less than a year earlier was associated with lower relative abundance.