Example sentences of "number of [n mass] of [noun pl] " in BNC.

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1 This is exactly what a number of species of birds have done — golden eye , European starling , moorhen and North American cliff swallow among them .
2 While many hitherto disinterested onlookers could , perhaps , stomach the loss of several insect species ( even dragonflies and butterflies ) , there were few who were not moved by the prospect of extermination for a number of species of birds .
3 The number of species of animals and plants living today runs into millions , and similar numbers of species have probably lived on earth for at least part of the earth 's history .
4 Such a limitation has not obviously affected the evolutionary ‘ success ’ of this type of body pattern , as witnessed by the vast number of species of insects and crustacea alive and flourishing today — but it certainly affects the extent of their behavioural repertoire .
5 Since 1923 , on Barro Colorado Island the numbers of species of reptiles , amphibians and birds have fallen since the effect of the secondary habitats associated with agriculture , prevalent there beforehand , has diminished .
6 In Mammalia I have also done much having nearly doubled the before known numbers of species of Kangaroos many of them large and noble animals .
7 The next phase of the study was to look at the quality of these ponds in terms of the numbers of species of animals and plants they support , the water chemistry and the surrounding land use of each pond or loch .
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