This transcription has been completed. Contact us with corrections.
[[red pencil lines in margin]] [[underline]] Saltator [[/underline]], I 8 [[circled in top right corner]] April 6, 1958 Barro Colorado I caught another Buff-throat near K-6 the other day Banded yellow left and let loose in the aviary. The other Buff-throat has been very hostile to the newcomer. Every time the newcomer comes near the old bird flies or rushes toward it in a supplanting attack, and the newcomer retreats immediately. All quite unritualized. No sounds. [[underline]] Saltator [[/underline]], I April 7, 1958 Frijoles An apparent dispute between 2 Buff-throats near here this morning. One bird advancing in short flights, the other retreating the same way. No apparently ritualized postures or movements, but both birds uttering calls which I shall term "Rattle-peeps" (RP) from time to time during the encounter. Each RP divided into 2 parts. First a series of short hard notes (most frequently 3, I think, but sometimes more), followed by a more or less plaintive melodious whistle-like note (also not very long, but much longer than any of the preceding notes) [[three short thick dashes followed by one long, slightly upward-curved dash]] This looked rather like a territorial boundary dispute, as the pursuer eventually turned away and went back in the direction he came from. I wonder if this is a variant of the WS I heard on March 16??? I certainly think so.