BIRDS FROM COSTA RICA—-WETMORE jl 
of the zone. The handsome, crested magpie-jay (Calocitta formosa 
pompata) of the arid section, however, ranged across the open lands to 
the wooded area, occurring thus at the very head of the Caribbean 
drainage. In these upland savannas I found the grasshopper sparrow 
and also the meadowlark. 
In the heavy forests above 1,000 meters on the Cerro Santa Maria 
there was weak indication among the birds of humid Upper Tropical 
Zone elements, the belt often termed the Subtropical Zone. Trees 
were tall, and at 1,200 meters I found tree ferns. The toucanet 
Aulocorhynchus caeruleogularis lived here, descending to feed as low 
as the coffee plantation back of the hacienda, but belonging properly 
in the higher mountain forests. Other species indicative of the higher 
zone elements are Rhynchocyclus brevirostris brevirostris, Turdus 
plebejus plebegus, and Catharus mexicanus fumosus. The race of 
Myioborus miniatus found here, and also Basileuterus culicivorus culi- 
cworus, Henicorhina leucosticta tropaea, and Xenops minutus ridgway, 
are less certainly characteristic of the higher zone since they range 
also into the upper portions of the Lower Tropical Zone. The summit 
of the mountain usually was covered with clouds that hung in the 
tree tops, leaving the undergrowth below free, and was beset with 
winds that seemed cold and harsh, partly because in work in these 
higher regions my clothing was always soaked with water from the 
dripping leaves and branches. Birds were more abundant on the 
lower parts of the forested slopes than in the wet undergrowth across 
the summit. 
I did not reach the somewhat higher reaches of the main peak of 
Volcan Rincén de la Vieja, but from the views that I had of the west 
face the slopes were not forested, being covered with grass and her- 
baceous vegetation, with indication of brush. Possibly this western 
face may belong in the arid division of the Upper Tropical Zone, but 
this was not certain. 
NOTES ON MIGRATION 
The valley of the Rio Tempisque and its tributaries seems to form 
one of the definite highways for northern migrants that travel to and 
through southern Central America. My stay was during the time 
_of the fall migration, when migrants of a number of species were pass- 
ing regularly, while others seemed more or less settled on their winter 
range. Among these travelers from the north sharp-shinned, broad- 
winged, marsh, and sparrow hawks were found in small numbers, 
Spotted sandpipers ranged along the Rio Liberia, the lesser yellowlegs 
_ appeared casually, and in the uplands I saw one Wilson’s snipe. A 
killdeer frequented the horse corral at the Hacienda Santa Maria. 
The western mourning dove appeared on October 27, and on No- 
vember 1 fully 100 were seen near the Rio Colorado. ‘The Texas 
