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The same 25 eyries of golden eagles (Aquila chry-saetos) were examined each year in west Scotland. In 1963-65 the "percentage of nests with eggs from ...
Read moreRivers in Northern Nigeria flowing north-eastwards into Lake Chad traverse, as they pass through the Sudan Savannah zone, wide seasonal flood-plains t...
Read moreIn studies on organochlorine residues in lakes of the Rift Valley, Kenya, 47% of the farms surveyed in the Nakuru catchment basin used either DDT or d...
Read moreResidues of DDE in kestrel eggs collected near Ithaca, New York, averaged 35, 42, 33 and 37 p.p.m. in 1969, 1970, 1971 and 1972, respectively. Based o...
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 moreThe following is based largely on the authors summary. This paper is the first of a series describing observations on a population of Pieris rapae (L....
Read moreThe following is based almost entirely on the author's summary. In investigations in southern England, nearly twice as many eggs were laid by females ...
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