The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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النتائج 1-4 من 4
الصفحة 124
... hawk , Cooper's hawk , the sharp - shinned hawk , feed largely on birds and are always willing to include young chickens in their diet . The duck hawk will winter sometimes in the heart of our large cities and live on pigeons . There is ...
... hawk , Cooper's hawk , the sharp - shinned hawk , feed largely on birds and are always willing to include young chickens in their diet . The duck hawk will winter sometimes in the heart of our large cities and live on pigeons . There is ...
الصفحة 125
... hawk , as birds to be courted , not killed . Poultry make up but I per cent of the food of a red - shouldered hawk and ten for the red - tailed species . The screech - owl , barn - owl and long- and short - eared owls are given every ...
... hawk , as birds to be courted , not killed . Poultry make up but I per cent of the food of a red - shouldered hawk and ten for the red - tailed species . The screech - owl , barn - owl and long- and short - eared owls are given every ...
الصفحة 140
... hawk feeds largely on meadow and house mice . The staple food of the long - eared owl is meadow mice . Three - fourths of the diet of the screech owl is mice . Nearly 9 per cent of the food of nestling crows is of rodents , rabbits ...
... hawk feeds largely on meadow and house mice . The staple food of the long - eared owl is meadow mice . Three - fourths of the diet of the screech owl is mice . Nearly 9 per cent of the food of nestling crows is of rodents , rabbits ...
الصفحة 273
... hawk and the rare Harlan's hawk . When the collection of skins at the National Museum became large enough it was seen that one shaded into the other and Harlan's hawk was relegated to the position of a color variety of the common form ...
... hawk and the rare Harlan's hawk . When the collection of skins at the National Museum became large enough it was seen that one shaded into the other and Harlan's hawk was relegated to the position of a color variety of the common form ...
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عبارات ومصطلحات مألوفة
acres Africa alloy America appears areas Asia atoms average bacteria birds black bass body carbon carbon dioxide cattle cause cells Cenozoic cent century changes chemical chlorophyll climate coal common compounds crops cultivated culture death rate destroy disease distribution domestic animals early earth eaten eggs elements enemies Europe evidence fact fish forms germ germ cells hawk heat horse human hydrogen Ibid important increase Indian insects iron killed known land later light live man's metals mice migration miles moth native nature neolithic nitrogen ocean organisms oxygen Pará rubber tree parasites plants and animals population pounds produce protoplasm R. S. LULL race regions rodents season seeds seems sharp-shinned hawk sheep soil South South America species square mile substances sugar supply surface survive tarpan temperature thousand tion to-day trees tropics types United wild