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Mixed Diglossini, Oct. 27, 1962, II  [[circled]] 30 [[/circled]]

[[left margin]] Humer [[/left margin]]
Apparent pair of Humers sticking together 5:59
    
This must be near the peak of the breeding season for Humers here.

[[left margin]] Cy Humer [[/left margin]]
When frightened, Humers fly into the trees visited by Cys earlier.
    
Going uphill now to see if I can find more Lafs. In order to get uphill, have to go up rocky slope with relatively scant & dry looking vegetation. No Lafs or Humers.

[[left margin]] Laf Humer [[/left margin]]
Can hear "Laf" in distance 6:14 am. 9875 ft. Also Humers. Songs not overlapping. Vegetation a little higher here.

[[left margin]] Laf Humer [[/left margin]]
"Laf" relatively nearby sings for several minutes 6:20. No overlap with Humers. The 2 species certainly do not usually overlap their songs here.

[[left margin]] Humer Laf [[/left margin]]
Hear more Humer song 9700 ft Alternating with "Laf" song. Then see singing "Laf" 6:32am. It is definitely Laf!!

[[left margin]] Laf [[/left margin]]
This bird is on edge of area slightly below 9900 ft which seems to be relatively damp (full of bamboo). The area is also full of Lafs. Several singing. Overlapping one another.

[[left margin]] Laf Humer Albi [[/left margin]]
So Laf would seem to prefer damper areas than Humer. Different preferences. Laf, Humer, & Albi are not purely matters of altitude.

Humers quite silent while Lafs are in full voice.

[[left margin]] Laf [[/left margin]]
Firebellies also common in area where Lafs are common. This may explain why Lafs sometimes react to Firebelly song (e.g. yesterday afternoon).

Area where Lafs are most common is 9800-9900ft. 

B nigrocristatus probably also common in this area

[[left margin]] Humer [[/left margin]]
There are also at least 2 Humers here. Possibly or probably on

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