Proposed Great Crested Grebe census
Thorough breeding season censuses of the Great Crested Grebe were made in 1935, 1946-55 and 1965; and to maintain these ten-year checks the British Trust for Ornithology is arranging for a further census of the species in Britain in the summer of 1975. The weekend chosen is 31st May-1st June, and it is essential that as many waters as possible are covered the
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