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Recent changes in agricultural practice have been hypothesized to affect the abundance and reproductive success of farmland birds. The influence of da...
Read moreThe following is based largely on the author's summary. Observations were made in 1964-68 on the biology and ecology of rice stem borers in Sarawak (E...
Read more1. The provision of artificial nest structures is used in the conservation of a broad range of bird groups including raptors, owls, ducks, passerines ...
Read moreLarge gulls (Larus) spp. are voracious predators of eggs and chicks of other colonial birds and may threaten rare or endangered species. We tested the...
Read more1. Across Europe, farmland bird populations have continued to decline since the 1970s owing to the intensification of farming practices. Studies of su...
Read moreSummary only. Chloride content of the soils and groundwater was very high and varied in different parts of the swamp but each profile showed little se...
Read moreThe following is virtually the author's summary. Studies were carried out in 1958-62 on some of the factors that affect the formation of bands of hopp...
Read moreThe following is virtually the author's summary. Since 1950, egg breakage has occurred with unprecedented frequency in the nests of peregrines (Falco ...
Read moreWetland ecosystems throughout the world are threatened by drainage and intensification of agriculture. Consequently, many wetland species of conservat...
Read moreThe authors present a model simulating the effects of the acridid Melanoplus sanguinipes on the yield of spring wheat planted in infested stubble. The...
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