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[[start page]] fuliginosus, Oct. 25, 1955, II 20 [[left margin column of crosshatch marking]] Good evidence that LCN is aggressive. Gradually increasing burst of LCN's by adult bird on ground before flying up to attack me by aerial charge. Lots of T from H, presumably FB, by juvenile birds. These attacks by the one territorial pair of adults, resenting my intrusion, have continued, off and on, for two hours. The LCN's are given so often and so loudly by there adults that it suggests that they can extend into regions of rather strong motivation. LCN's often given when I would expect a long call. This attracting pair must be on their pairing territory, I think, but they are well along in the pairing process. No FB or regurgitation today (possibly yesterday, however): but still there isn't much violent hostility between the birds. Often their MC is confined to a vague, (i.e. difficult to tell if ritualized or not), V, with or without equally vague HF movements, or a series of LCN's. Each LCN on ground is accompanied by definite forward movement of head and neck. Presumably [[uit.]]/[[int.]][[ mov.?]] of O, but also often looks like T [[uit.]]/[[int.]][[ mov.?]]. This [[lart?]]/[[last]] appearance is almost certainly misleading. "Kow" syllables in complete L.C number about 5-8, followed by "Kiow"s with T's. Have heard one try syllabic [[al.C.?]]/[[call]]: "Kek Kek Kek" Otherwise all mono - or bi - syllabic. To sum up: This species would appear to be a typical hooded gull of the atruilla-pipixcan, and presumably primitive, type In addition, the Tuking would suggest a relationship with furcatus. [[end page]]
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