BTO Christmas card featuring a Robin by Dennis Harle, 1965 The tradition of sending Christmas cards was begun in 1843 by the civil servant Sir Henry Cole (1808–1882), who commissioned his friend, the ...

Further information about methods for taking biometrics measurements can be found in Chapter 11 of the Ringers' Manual.

A key step in understanding the possible impacts of a proposed windfarm development is to identify potential interactions between seabird breeding colonies and the proposed development areas. Such ...

Our provisional results show many more 10-km squares to be occupied compared with the 1988-91 Breeding Atlas. In Britain 30% more 10-km squares are occupied, and in Ireland the figure is 68%. Some of ...

This report details work to evaluate two approaches for producing maps of relative abundance from BTO/JNCC/RSPB Breeding Bird Survey data. These maps could be useful for setting local conservation ...