Fifty years of Bird Study

摘要: Capsule Field ornithology is alive and well, in the future can contribute much more Britain elsewhere. Aims To review progress of field context Bird Study British Trust for Ornithology. Methods An overview was taken main subject areas published to characterize over 50 years. Some quantification data on bird organizations performed. ResultsKnowledge status trends birds has moved from qualitative generally well detailed quantitative past Causes distribution changes are increasingly understood terms habitat population processes. Behaviour ecology have grown be separate disciplines their own right although been major subjects study within them. Migration studies lagged somewhat but advanced elsewhere recent decades. Amongst organizations, BTO still a growing membership, that of...