(Edward Grey Institute, Department of Zoological Field Studies, Oxford). T H E number of heronries on which reports for 1950 were received at the Edward Grey Institute was 207, or 45 more than in the previous year. Of these 150 were in England, 17 each in Wales and Scotland, and 23 in Ireland. W e are indebted to 89 informants of whom several have collected information from friends and corresponde...

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