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89 Mixed Diglossini, Apr. 23, 1965, VII [[margin]] Humer 94 [[/margin]] 8:00 am. See single bird. Obviously Humer. √ Perched top dead bush area burned scrub. I think this bird uttered one song phrase. Typically Humer. NOD. [[margin]] Humer 95 Laf [[/margin]] 8:10. Come accross another Humer √ further along road. Area thick low unburned scrub. (I.E. looks quite suitable for Lafs) Bird singing phrase after phrase. All twitters with terminal R's. Eventually bird flies away. A minute later, Laf √ flies into area only 30 ft away. Begins to sing typical song of the species. [[margin]] Humer [[/margin]] Why don't the Humers on Guadelupe sing? Too crowded??? [[margin]] Laf 96 Blue [[/margin]] Then Laf shuts up. Then see Blue √√ Diglossa, probably Cy, feeding on dark red flowers midway between points where Laf and Humer have sung. [[margin]] Laf [[/margin]] 8:17 Now there are several Lafs singing at several places around here. [[margin]] 99 [[/margin]] Then see pair √√√ Firebellies. Accompanied by a third individual, presumably young same species. Similar pattern but with yellow- orange belly. Silent. Apparently alone. Moving thru dense scrub, 15 ft above ground. [[margin]] Cy Laf [[/margin]] 8:25. Sudden outburst both Cy and Laf songs. Overlapping. Then Cy(s) shut(s) up. Laf continues. [[margin]] Humer Laf [[/margin]] As as far as I can tell, Humer and Laf territories probably are (still) mutually exclusive throughout this Guasca area. [[margin]] Cy Humer 101 Laf [[/margin]] See pair √√ of Cys in exact same bushes where Humer sang earlier. I.E. territories Cys and Humers largely or completely overlapping. Cys fly on. Sing. NOD. Shut up. Then Laf sings. Shuts up.