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thinks, due to local conditions, such as the "sounding 
hoard" background of the mountain side and the clear 
mountain air. 
The Pomarack Tree all this while was simply alive 
with Hummers which were squeaking, zeeping, and darting 
to and fro in the most bewildering manner. It was diffi¬ 
cult to count them accurately but there were at least 
a dozen actually in the tree at once on several occasions. 
As soon as I had rested sufficiently I began shooting 
them, killing eight specimens in the course of a couple 
of hours. Among my victims were three Tuby-topaz Hummers, 
two males and a female. I also got two young birds only 
a week or two from the nest and still feeble on the wing. 
I take them to be the young of Agyrtria chionipectus . 
The big Lampornis vi olicauda is nearly sure to 
be present at all these gatherings of Hummers and where 
he chooses to assert himself he easily "rules the roost" 
although the other and feebler species are too plucky 
and hot-tempered to five way without a struggle. Repeatedly 
in the flowering Bo is Immortels at Caparo and once or 
twice in the Pomarack Tree I have seen a Lampornis take 
and maintain exclusive possession of the tree for fifteen 
or twenty minutes at a time, instantly darting at and 
putting to flight any and every other Hummer that tried 
to get a share of the feast. On t?<ro occasions I have been 
