Sections 1 MUTUAL AID AMONG ANIMALS (continued) Migrations of birds. 2 Further north, in the Arctic archipelagoes, "you may sail along the coast for many miles and… 3 Life in societies does not cease when the nesting period is over; it begins then in a new form. 4 Going now over to mammals, the first thing which strikes us is the overwhelming numerical… 5 Association and mutual aid are the rule with mammals. 6 However, it is especially with the rodents, the ungulata, and the ruminants that we find a… 7 The large tribe, of the marmots, which includes the three large genuses of Arctomys,… 8 Even such harsh animals as the rats, which continually fight in our cellars, are… 9 Life in societies is again the rule with the large family of horses, which includes the wild… 10 Many striking illustrations of social life could be taken from the life of the reindeer, and… 11 I also ought to say a few words at least about the "compound families" 12 It is hardly needful to say that those mammals, which stand at the very top of the animal… 13 We thus see, even from the above brief review, that life in societies is no exception in the… 14 Sociability—that is, the need of the animal of associating with its like—the love of society… 15 "Presently," 16 Moreover, it is evident that life in societies would be utterly impossible without a… 17 If the views developed on the preceding pages are correct, the question necessarily arises,… 18 As to Wallace, who quotes the same facts under a slightly-modified heading ("Struggle for… 19 In such cases what is described as competition may be no competition at all. 20 If the physical and the biological conditions of a given area, the extension of the area… 21 The importance of migration and of the consequent isolation of groups of animals, for the… 22 In short, if we carefully consider this matter, and, carefully re-read what Darwin himself… 23 As to the facts of an extremely rapid increase of horses and cattle in America, of pigs and… 24 The importance of natural checks to over-multiplication, and especially their bearing upon… 25 On the other side, the contagious diseases which continually visit most animal species… 26 Happily enough, competition is not the rule either in the animal world or in mankind. 27 4. 28 16. 29 27.
Start Learning MUTUAL AID AMONG ANIMALS (continued) Migrations of birds. Breeding associations. Autumn societies. Mammals: small number of unsociable species. Hunting associations of wolves, lions, etc. Societies of rodents; of…
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