... When first he came upon them they were moving slowly butsteadily southward in one of those periodic migrations the reasons forwhich the baboon himself is best able to explain... 
Edgar Rice Burroughs 「The Son of Tarzan」
...The exact limits of theseannual migrations are unknown; it is, however, probable that in thenorth they never go beyond the banks of the Rio Bravo, at least in theStates of Cohahuila and Texas...
William T. Hornaday 「The Extermination of the American Bison」
...A very abundant species during migrations, being foundon the seashore or in marshes, nearly always in companywith other species of the family...
Chester A. Reed 「The Bird Book」
...They are very local in their distributionboth during migrations and in their breedinggrounds...
Chester A. Reed 「The Bird Book」
...They arefound during migrations on or nearthe ground on the edges of woodsor thickets and along roadsides;have a peculiar habit of "teetering" their tailwhich will readily identify them...
Chester A. Reed 「The Bird Book」
...The rarerspecies may be less hardy, have more enemies, be exposed to moreperils in their long migrations, &c...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...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」
...It is mostoften seen following the coast-line during migrations whereit takes toll of Ducks and shore-birds...
Frank M. Chapman 「What Bird is That?」
...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」
...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」
...The cackling geese are commonly foundin flocks of the white geese, both in their feeding andtheir migrations...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...In its former state, the larva, subject tostrange migrations, obviously needs the sense of sight and isprovided with four ocelli...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...There is perhaps lessinformation available concerning the migrations of the wild Reindeer ofthe Old World than concerning the movements of the Barren Ground Caribouof North America (cf...
Francis Harper 「The Barren Ground Caribou of Keewatin」
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