...“Of course; for the end of all these invasions and migrations must be in such a sacrifice of human life as to afford sustenance and the means of subsistence to those who remain,” observed the Major... 
Captain Frederick Marryat 「The Mission; or Scenes in Africa」
...As we near historic times the migrations of men became more frequentfrom Asia and from Europe, and in Africa came movementsand minglings which give to the whole of Africa a distinct mulattocharacter...
W.E.B. Du Bois 「The Negro」
...--Whole of North America, breeding inthe Arctic regions, and wintering south of theUnited States, most abundant in the eastern partsof the United States during migrations...
Chester A. Reed 「The Bird Book」
...Tordoff points out, also, that the irregular, erratic migrations ofthe New World Carduelinae are unlike the more regular migrationsof the richmondenines and emberizines...
William B. Stallcup 「Myology and Serology of the Avian Family Fringillidae」
...During the migrations the Bank Swallow travels withother members of its family, sharing their roost in themarshes by night and their wayside perch by day...
Frank M. Chapman 「What Bird is That?」
...1; more numerousduring migrations, in Mch...
Frank M. Chapman 「What Bird is That?」
...During its spring and fall migrations only is it at allcommon about the elms and maples that men have planted...
Neltje Blanchan 「Birds Every Child Should Know」
...—Pacific coast; breeding in mountains from southern Californiato Kenai Peninsula, Alaska; winters from California southinto Mexico; east to Colorado in migrations...
Frank M. Chapman 「Color Key to North American Birds」
...With this separate familylife there is still in most species of birds concerted action bycommunities in migrations, in forming colonies, in attacks on othercreatures, and in defense from enemies...
John H. Robinson 「Our Domestic Birds」
...Though by no means a rare bird, the Whimbrel is of far less commonoccurrence than the Curlew, and is seen only at two periodsof the year, in May and August, when performing its migrations...
Rev. C. A. Johns 「British Birds in their Haunts」
...They have no migrations likethe passenger pigeon once so plentiful in the easternstates, nor do they congregate in such immense flocks...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...The widgeon begins its migrations early in the falland great numbers find their way as far south as theCoast marshes and lower lakes of Mexico...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...Fathers of his family that had accomplished many migrations appearedsmall beside him, and coats that had been shed season after seasonseemed dull compared with his...
Gene Stratton-Porter 「The Song of the Cardinal」
...The direction of the migrations, as reported in someinstances, is just the reverse of that taken at the present time by theBarren Ground species during its normal movements at correspondingseasons...
Francis Harper 「The Barren Ground Caribou of Keewatin」
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