Diving times of grebes

01 January 1968 Comments Main paper During August to October 1966 I made regular observations on the diving of the Pied-billed Grebe Podilymbus podkeps which lived in a well-defined territory on the west side of Chew Valley Lake, Somerset (Ladhams, Prytherch and Simmons 1967). The results p...
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Letter

01 May 1935 Comments Letters SIRS,--A sample count of Great Crested Grebes (Podiceps c. cristatus) is to be taken during the coming summer under the auspices of the British Trust for Ornithology. The main object of the count is to ascertain as far as possible what effect the past two...
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