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Miscanthus is a newly introduced crop grown primarily to produce biomass for energy production and the area grown in the UK is anticipated to increase. Major differences in crop management from conventional arable crops have led to speculation that miscanthus may also have effects on farmland biodiversity. Six miscanthus fields were paired with six of a conventional crop, winter wheat, and bird diversity and abundance were compared in winter and during the breeding season along with potential food sources. Miscanthus fields had a greater abundance and diversity of birds than did wheat in winter and summer. In winter, the greater numbers of birds in miscanthus fields were probably attracted by the shelter provided by the crop and by the abundance of non-crop plants. During the breeding season, the abundance of non-crop plants in miscanthus fields, and greater numbers of insects associated with these plants, provided food resources. However, the miscanthus crop plants provided less insect food than wheat crop plants. Changes in crop structure during the breeding season influenced the breeding birds. The results from this study suggested that an increase in the area of miscanthus grown in the UK may have temporary benefits for farmland bird populations during establishment. These benefits are likely to diminish with age of crop and as crop management improves with experience. Management for wildlife will be required to maintain the diversity of features attractive to birds because many of these will be lost if miscanthus is managed solely to maximise crop yields.

We examine the first arrival and last departure dates of migrant bird species from, respectively, six and three English area bird reports. Of all 145 bird series, 50% demonstrated significantly earlier arrival in recent years with the average advance over all species being 0.25 days/year or 12 days earlier over 50 years. 30% of 67 series demonstrated significantly later departure, with the average species delay being 0.16 days/year or 8 days later over 50 years. There was greater consistency between species in trends in first arrival than in last departure, with species such as sand martin Riparia riparia significantly earlier at all six sites while, for example, spotted flycatcher Muscicapa striata showed no significant change in arrival at all sites. Significant negative correlations between arrival dates and English temperatures were found for 26% of all series but temperature effects on departures were less clear. We provide some evidence that trends in arrival dates may be masked by population declines in birds. Since migrant bird populations are in decline generally this may suggest that the real advance in arrival dates may be greater than that reported here.

In this paper we compare the Central England Temperature (CET) and England and Wales Precipitation (EWP) series with temperature and precipitation records from 24 individual meteorological stations throughout the UK over a 41-year period 1964-2004. With a single exception, the correlation of CET monthly means with those of all local stations was highly significant (p < 0.001). Correlations with EWP were not as large, but for the most part were highly significant; exceptions occurring increasingly in the most northerly stations. Because of their general availability, the CET and EWP series will continue to be popular, and their use in a range of broad studies of UK climate appears to be justified.

There have been major changes in agricultural practice over the past 50 years. The increasing efficiency of arable production has led to larger field sizes with the associated removal of many hedgerow field boundaries. This, together with high input farming practices, has had a deleterious effect on the quality of the rural landscape as a wildlife habitat. This study focuses on green lanes, that is, trackways bounded on both sides by hedgerows, and the adjacent field margins of arable crops and examines each habitat to determine their relative resource value to bumblebees. The vegetation communities within 15 green lane sites and those of the adjacent field margins were recorded, and subsequent analysis showed that species richness was significantly higher within the green lanes. Bee numbers were recorded at each site during 10 visits, both along the inside of green lane hedges and the outside of the opposite hedge on the field margins of the arable crops. At each visit the flower abundance of 10 plant groups was recorded for each habitat type. The results show that bumblebee abundance was significantly higher within the green lane habitat than on the field margins and that this difference was directly related to the abundance of flowers within the habitat.