How to spot a Blackcap
Blackcaps are quite chunky birds, about the size of Chaffinches, with fine, dark beaks. Both sexes are mostly grey in colour and, in winter, are best distinguished by the colour of their cap. Adult males display the black cap that gives the species its common name, while females have a chestnut-brown cap. For more detail, please watch our ID video.
The urban sprawl
BTO's Head and Principal Ecologist, Gavin Siriwardena, explains how the urban landscape is affecting our wild bird populations.
What we can learn from 25 years of watching gardens
Exploring the value of a complete quarter-century of weekly garden bird observations from BTO's Garden BirdWatch covering the length and breadth of the country.