Salt Lake Herald-Republican | 1915-06-27 | Page 26 | Bird Migration Has Its Secrets

BIRD MIGRATION I IHAS HAS ITS SECRETS Biological Survey of U. U S. S Department Department Department De De- De- De Clears Up Questions The biological survey of the department depart depart- ment meat of ot agriculture is making known many of oC the secrets secreta of or bird migration that have hae only recently come comEt comes to light after twenty five years of study Data have been contributed not only b by its staff stat of ornithologists but by more than 2000 operating co-operating Individual observers observers observers ob ob- ob- ob servers in North and South Amerl Amen i. i i and the West Vest Indies Altogether mo than observations are nrc represented represented represented in the data in the hands of ot the thes s survey u Migration the survey has developed 1 is not merel merely a matter of ot north and south movement with a given degree of or temperature The widest differences as to fo o migratory habits prevail among the inhabitants and sojourners sojourn sojourn- ers of ot the United States and Canada At one extreme are such birds as the tho quail that live and die dlo without going ten miles from their hatching hatching- place and at the other the arctic terns terna that spend tho the northern summers Bummers near the north pole and other months of of the year ear in the Ic icy regions Ions of the antarctic Some birds that nest in the northern part of ot the United States and and Canada are aro content to spend their winters Inthe in tho the gulf guJ states but more than specIes species cies des go o to Central and South America fOI for the winter season The routes of the various birds to their winter feeding feed feed- ing grounds var vary widely but by far the majority of the migrants avoid the land trip tEll through Texas an and 1 the zno modi modi- tied fled land trip by wa way of or Cuba an and the Le Lesser Antilles and strike boldly across across across' the to mile mlle expanse of ot the Gulf Gut of Mexico This water flight ht Is made In a single night even by the diminutive humming bird The rhe wintering places of many of the ml migrants have lIa been determined 1 as have their routes of flight ht Some kinds of or birds are arc not content with their tui trip to Mexico or northern South Amer Amner- lea ion but continue their flights hights beyond the tho equator to th the pampas of or Argen Argen- tina Una Some of or tho the best known know birds that nest in North America make these lon long winter journ Journeys ys lh The scarlet tanager tan- tan ager migrates rates from Canada to Peru The rhe N New Nv w England Ingland bobolinks winter in Brazil and with them go 0 such common common cornmon com corn mon birds a as aH cliff swallows nighthawks night night- ht- ht hawks and some thrushes Blackpoll warblers that nest In Alaska migrate miles to the southern coast coant of oC the tue Caribbean sea Tho The record mIgration migra mIgra- tion for land birds Is probably hold held b by the whose reu- reu J frequent Alaska I the thue nesting season seabon and fly rb at tho the nl- nl ap- ap of winter as far lar south aa as Patagonia Patagonia Pata Pata- gonia more than miles away I I