General guide to the exhibition halls of the American Museum of Natural History . I. BIRD LIFE OF THE GOBI the winter, as the Demoiselle Crane, GreatBustard, and Ruddv Sheldrake. The Ravenremains throughout the year. The interestingSand-Grouse often travels long distancesdailv for water and has an irregular localmigration. ?a\aearctic Alpine Group. The Zermatt Val-ley and the Alatterhorn, in Switzerland, areshown with some of the characteristic birdsof the upper Alps at timberline at 7000 feetelevation. Some of the species, like theWall Creeper and the Snowfinch, probablyreached the Alps from
General guide to the exhibition halls of the American Museum of Natural History . I. BIRD LIFE OF THE GOBI the winter, as the Demoiselle Crane, GreatBustard, and Ruddv Sheldrake. The Ravenremains throughout the year. The interestingSand-Grouse often travels long distancesdailv for water and has an irregular localmigration. ?a\aearctic Alpine Group. The Zermatt Val-ley and the Alatterhorn, in Switzerland, areshown with some of the characteristic birdsof the upper Alps at timberline at 7000 feetelevation. Some of the species, like theWall Creeper and the Snowfinch, probablyreached the Alps from the Himalayas in pre-historic times when these two now distantmountain ranges may have been , like the Arctic Ptarmigan and Red-poll, may have come from the north, drivenby the advancing ice of the Glacial others are inhabitants of the lower eleva-tions that have extended their ranges up-ward to the Forest Group. The Palaearctic Zoneor Old World North Temperate Zone cor-responds to the Nearctic or North Tem-perate Zone of North Americ
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Keywords: ., bookcentury1900, bookdecade191, booksubjectnaturalhistorymuseums
