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(5) [[underlined]] BQ [[/underlined]] November 18, 1962 Barro Colorado Beginning observations 6:00 am Clear, but still rather dark. BQ apparently arrives 6:10. Usual bush. Can't see bird, but it is uttering lots of "Tseet"s. Some quite long, e.g. "Tseeeeet". Quite regular in rhythm. Almost DC. See bird a few seconds later. Feeding. Utters occas. "Tseeet" in intervals between feeding. I shall call these "Tseet" - "Tseeeeet" type notes "PN"s. The ordinary "Tsit"s I will call CN's. And the particularly loud hard "Tsit"s I will call "SHN"s. BQ gone again 6:12. Then back again, feeding and uttering occasional PN's, CN's, or (CN-PN)'s. 6:15 a.m. Bird begins to sing in nearby tree. Possibly the same bird I have been watching feed in bush. Song MS type. Accelerating. A few seconds later another bird flew into bush. Utters several series loud brief notes. Exactly intermediate between typical MS notes and typical SHN's. This second bird [[underlined]] may [[/underlined]] be a II. A minute or so later there are 2 birds in bush. Uttering CN's, nothing more. Then one flies away. Remaining bird utters one loud MS song, then apparently flies away too. Then pair re-appears in bush. Utter CN's. One bird also utters brief series (CN-SHN) notes. Might be transcribed as "Ta zee zee zee". These birds are almost certainly both II's. A