... Before we came to the Orange River we saw the last portion of a migration of springbucks ('Gazella euchore', or tsepe)... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...“They will go directly on to the southward,” replied Swinton; “the migration of these animals is one of the most remarkable proofs of the fecundity of animal life...
Captain Frederick Marryat 「The Mission; or Scenes in Africa」
...Movement and migration is evident along this coast in ancient andmodern times...
W.E.B. Du Bois 「The Negro」
...The result was endless movement and migration both in ancientand modern days, which makes the cultural history of the GreatLakes region very difficult to understand...
W.E.B. Du Bois 「The Negro」
...The migration of the Bantu is the first clearly defined movementof modern times...
W.E.B. Du Bois 「The Negro」
...The Colonization Society encouragedthis migration, and the Negroes themselves had organized the Canadianexodus...
W.E.B. Du Bois 「The Negro」
...Theannual migration from the south had not yet begun, or rather had not yetbrought any of the southern buffaloes that far north...
William T. Hornaday 「The Extermination of the American Bison」
...The loss occurred practicallyall along their east-and-west line of migration, from Arkansas tothe Atlantic Coast...
William T. Hornaday 「Our Vanishing Wild Life」
...
: A few elk, by migration from the Park; a few deer, and bear of two species...
William T. Hornaday 「Our Vanishing Wild Life」
...The migration of those birds that unexpectedlycame down from the north last winter was like the fall of ameteor,—only the birds promptly faded away again...
William T. Hornaday 「Our Vanishing Wild Life」
...Theseare the "Rail-birds" or "Ortolans" which are annuallyslaughtered by thousands, for sport and marketing, during their fall migration...
Chester A. Reed 「The Bird Book」
...As such migration is likely to happenwhenever a species becomes extremely abundant it probablyis Nature's way of providing for an extended foodsupply for the succeeding generations...
Clarence M. Weed 「Butterflies Worth Knowing」
...Its migration extendssouth to Buenos Ayres, where it is seen in woods and thickets in pairsor singly; but it is a rare bird, and I have been unable to find outanything about its nesting-habits...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...Further south their migration is more strict; and on the Rio Negro,in Patagonia, from March to August I did not meet with a singleindividual...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...From your text andreference books find other examples of migration...
Worrallo Whitney 「A Guide for the Study of Animals」
...However, in ourwinterless clime, migration is not complete, and this year (1910)there was probably little migration of Swallows...
John Albert Leach 「An Australian Bird Book」
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