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[[circled]] 27 [[/circled]] Mixed Diglossini, Oct. 26, 1962, III [[left margin]] Humer [[/left margin]] Working on Mt. above Bogotá in afternoon. Arrive 9800 ft 3:15 pm. New area where I haven't worked before. Find at least 3 male Humers singing quite frequently. No overlap. One bird consistently has terminal R. Another has sub-terminal R or both sub-terminal & medial R. This area looks much like paramó above Guasca Thick but low scrub [[left margin]] Humer Laf [[/left margin]] Humer songs now do not induce Laf songs. But the different Humers obviously stimulate one another. The only Humer I can see singing has no trace of belly fluffing. 3:24. This bird is now singing steadily, from high exposed perch. [[left margin]] Humer [[/left margin]] Can also hear "Zreeeeeeeee-zaza" patterns from birds flying & hopping in scrub [[left margin]] Humer [[/left margin]] Moving along side of mountain, at approximately same altitude. Hear more Humers singing. Almost all songs with sub-terminal R. One bird seen singing has no belly-fluffing. [[left margin]] Humer [[/left margin]] Humers here are quite noisy & conspicuous. Like Aters near Quito! Presumably because they are common and comparatively close together. [[left margin]] Humer [[/left margin]] Phrases of one bird might be transcribed as: "Tit-a-tit tit-a-tit rreeeeyoo" and "Tit-a-tit tit-tit sreeeeeeya" [[left margin]] Humer [[/left margin]] 3:50. Two Humers alternating song phrases quite regularly. Little or no pauses between phrases; but still no overlap! [[left margin]] Humer [[/left margin]] These Humers do not seem to be inhibited by rather similar-sounding hummingbird songs. Their songs overlap the songs of hummingbirds
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