Especially work should he done further to the east 
in the valleys,for example at Coatigaita,and at 
Cinti and Camargo and in the upper Pilcomayo valley. 
The region is not very rich in species,as was proved 
hy our work in 1936,hut still X do nou think that 
enough localities were visited,especially the 
region lying between the road from Tarija to Villa 
Montes and the road from Camiri to Sucre. It is a 
difficult region to penetrate,being sparsely settled ar 
and with trails very had and pack animals almost non¬ 
existent. However enough work has been done to give a 
fairly accurate idea of the bird fauna of the whole re 
region. • < 
Callinaropa (12210 feet) 
Prom Oploca we returned directly to Callipampa, on 
the evening of March 4th,reaching Callipampa ; on the aaa 
morning of the 5th. Callipampa is the Mill camp for th< 
•tin mine of the Compahia Minera.de Monserrat,the mine 
being about 15 kilometers back in the mountains to the 
east,while the mill is on the R.R. about 9 kilometers 
south of the town of Poopo,situated at the extreme 
upper end of the Lake (Poopo),or rather from the 
Rio Desaguadero,a mile or two above its mouth. 
Prom Callipampa to the Lake is about 4 kilomete 
but this year,due .to continuous drouths for three 
years,the lake is very low and the water has receeded 
until it is about three miles out beyond normal shore 
line,perhaps more. This was a big dissapointroent,since 
I particularly wanted to secure more Plamingos and 
other water fowl on the lake,but the state of the water 
both in lake in River made it very difficult,while 
birds were unusually scarce,especially on the river 
and in its delta,due to the fact that cattle had been 
able to walk over the whole area(on account of low 
water) and had either eaten or destroyed most of the 
reed beds("totora") which ordinarily furnish shelter an 
and much food for the birds. 
There were, few changes found in the species of 
birds on the lake and river,except the scarcity of 
practically all of the resident forms. However there 
were thousands and thousands of migrant Shorebirds, 
especially the Lesser Yellowlegs;"Stilt"Sandpiper(?) 
and two others (see cards) 1 . I have never seen shore 
birds anywhere in such vast numbers as they were 
here between I,larch 6th and 14th. Plamingos were sceSBI 1 
and extremely difficult to approach,but one fine male 
was eventually secured. 
