Are Nightjar numbers still on the way down? The first sign of a decline in numbers of Nightjars Caprimulgus europaeus was in 1952, and, since the BTO Nightjar Survey of 1957-58, the trend has been one of a continuing decrease, especially in the North and West. The second BTO Nightjar Survey, in 1981, recorded only 1,784 males, with over 60% of the British population concentrated in Dorset, Hampshire, West Sussex and Surrey, and a further 20% in Norfolk and Suffolk. Most of the remainder is thinly scattered, although there are some other local concentrations. The time is ripe for a new survey, which will take place in 1992, and will be run in conjunction with the RSPB. This survey has two main objectives. First, to count and map the locations of all breeding Nightjars in Britain, and secondly to make detailed descriptions of the habitat at Nightjar breeding sites. This time, the survey will include staff from both organisations, as well as volunteers. During 1991, the BTO and RSPB are evaluating techniques, as well as making a start with surveying those counties with large populations. The survey will be organised through the BTO's Regional Network, in close co-operation with county and regional bird clubs and Nightjar Groups. This autumn, the BTO will distribute site lists to local organisers, so that observers can be allocated sites and sent survey maps and recording forms well in advance of the 1992 season. For more information, contact your local BTO Regional Representative.
