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[[underline]] belcheri [[/underline]], Nov. 20, 1955, II [[image-number 108 in circle]] i.e. "ha ha ha ha", etc., that is equivalent to a [[underline]] single [[/underline]] LCN. Doesn't this confirm the conclusions that I reached after studying juveniles at Delta?) These birds also gave [[underline]] complete [[/underline]] Trumpeting Call performances. HD-O. Both postures exactly like those of adults; except for the fact, again, that the carpi were [[underline]] not [[/underline]]raised [[underline]] at all [[/underline]]. The notes themselves were much like those of adults; except that they were "hoarser", i.e. reminiscent of the Ring-bill in quality of tone. This performance was given repeatedly, at long intervals, whenever a particularly bitter dispute arose. These birds also had an H posture - just like that of the Herring Gull. A prelude or low-intensity form of "begging". "Begging" itself relatively common. Certainly food-begging. In H. found the usual "klioo" type; I think it was just the same as that of the adults. Relatively slight HT. [[underline]] Very few Gosts, if any. No sign of choking. [[/underline]] I must add, before I forget, that the primaries of these birds had been clipped Half way or less. I don't think that this is the explanation of the lack of capi-raising - for several reasons. The birds could, and did, fly a few feet in a low awkward flight. And similar clipping did not effect the carpi-raising of the Andean Gull in the same enclosure. November 20, 1955, Zoo, Lima [[underline]] dominicanus [[/underline]] Also watched an adult of this species. In bad condition, but nuptial plumage, and gave several Trumpeting Call performances HD-O; with postures & voice similar or identical to those of the Herring Gull.
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