Intoattootioa# 
Wm operation of the treaty protecting migratory birds that 
pass botwosn tbs Uni tod States and Canute tea boon at toad s& with oaoh 
gratifying inoroiw among i^^atory gpsas and inseafcivorousj birds tot 
It ha* bom propooofi to negotiate stalls* treaties with the count** im 
of Latin dm*ids* Before sate notion was undsrtteoa it was necessary 
to examine present day oonaitions in tucso countries with regard to 
our Migratory birds, Uuon studios war© necessary pstmrily in tbs 
arms where too bulb: of our aharsblr&s pass to jxvtoaro wintor* ®*e 
present report embodies ths results of i&vastlg&tioas on tfco species 
* 
of migratory birds that pass from the Uni tod utatee to A»esntlnat« 
Uruguay, Paraguay, and Chile* it covers an aoooant of laws for to 
protection of birds in toss countries, to gsnsral attitude t ;ar e 
toward bird protection, the conditions under teioh oar migrants sirs 
found, and a brio# reeusao of ths js'laoipai apse!** of our birds tot 
annually perform to long Journey to southern death mm%m* fit M 
wasJt on white this aauount is toed aooupied ths period from tey 2P* 
l<m to Uay 1% 1^21* 
itinerary. 
•Jn tey £6, 1920 i left teohiagtoti, $* C, t and on ths following 
day soiled from Urn Tors for Buenos «iro» f Argentina* shear© 1 arrived 
oa Sum 21* ib»« 1 sns ooteplsd until July 3 in oecwring aosdsd 
information from gtfwewamt offloials* ansi man In eoioatlfin worjfc and 
in arranging for flolct vasts* Observations in the field wore begun on 
July 4 in to Ch&oo, a region where suroiiy savannas alternated with 
I 
too to of forest* that extends wwet of mis faragnay River fro*. teats. 
