- 3 & 
seen. Near the head of one of the valleys rose a waving 
streamer of smoke or steam — from a geyser. As soon as we 
got fairly outside the town we began to see birds in con¬ 
siderable numbers and higher up the valley they were really 
abundant in many places. With Chapman’s aid I recognized 
M argarops densirostris , Coereba bartholemica , Eulampis 
jugularis , Eularnpis holosericens , Bellona exilis , Chaetura 
acuta, Pyrrnulagra ridgwayi , and Dendroica melanoptera. 
The Hummingbirds were especially numerous and 
conspicuous. Scarce a minute passed when one or two were 
not in sight and I often saw four or five together. The 
males were continually chasing the females and each other. 
All three species make a shrill squeaking noise almost 
exactly like that of Tro chilus colubris . The flight of 
Bellona is similar to that of colubris but both species of 
Eulampis fly either in short, jerky undulations like a 
Warbler or on a level plane with long, steady, rapid wing 
beats like a Swift. 
The only birds heard singing were the Coerebae , 
whose singular wheezy notes (a type of song new to me) were 
rarely out of our hearing. 
