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(54) [[underlined]] Diglossa, [[/underlined]] May 25, 1962, IV. [[blue and pink marking]] When I arrive at the Conebill area, a Blue-spot is singing. Shuts up. Then a Conebill sings. Shuts up. Then another Blue-spot starts to sing!!! Shuts up. Period of silence. Then first Blue-spot starts to sing again. All 3 birds are singing from stations rather far apart from one another, but the station of the Conebill is closer to that of one of the Blue-spots than the two stations of the Blue-spots are to each other. [[/blue and pink marking]] [[blue marking]] I have seen several cases (involving at least 4 different birds) of [[male symbol]] Blue-spots chasing other [[male symbol]] Blue-spots in flight. Always quite silent. [[/blue marking]] [[blue and pink marking]] 7:15 a.m. Blue-spot sings. Shuts up. Then Conebill sings. Shuts up. Then sings again. Shuts up. Another Conebill sings. Shuts up. Then another Blue-spot sings. Shuts up. Then a third Blue-spot sings! Then shuts up. Then first Conebill sings again. Shuts up. Then a (fourth?) Blue-spot sings. Shuts up. Then another Blue-spot sings. Then first Conebill. Then a Blue-spot!!! This segregation of songs seems to be almost too good to be true! [[/blue and pink marking]] [[red 'C' marking]] 7:30 a.m. Hear burst of "Zeewee zeewee zeewee zeewee" song, exactly like the song I thought was uttered by [[underlined]] aterrima [[/underlined]] at dawn this morning, but this time I can see it is uttered by Conebill. [[/red 'C' marking]] [[blue and pink marking]] Then Blue-spot sings. Then Conebill sings again. [[/blue and pink marking]] [[red 'C' marking]] I think the 2 Conebills have may be rival [[male symbol]]'s. I have seen several chases which may have been hostile. Difficult to tell exactly what is going on, as birds are usually obscured by vegetation. [[/red 'C' marking]] [[blue marking]] 7:40. Several more cases of Blue-spots beginning to sing when I appear. [[/blue marking]]
