J P Myers 1974 Catidris fuscicollis Mouth of Canal Santo Laguna Ullar Chiquita, 21 Km N of Mar (Chiquita by road), Bellin Poto de Ullar Chiquita, Provincia de Buenos Aires, Argentina 3 April (contd) exclusion employment as part of the territorial repertoire. By using a modified Oecumenic range-over strategy that the [illegible] # of territorial WR necessary to explain the distribution of foraging-supplementation—and careful following of individual territorial core for several minutes time (in order to set the patterns of their foraging effort) I placed the ——— noting territorial preference. A count reveals that 5 territorial WR that were partially or completely (only 1 of the 5) on the subunit. At any given time there were no less than I found on the subunit (a minimum which occurred between the 5 min interval sample). Generally, there were more, averaging 6.4 birds per count (8 samples). The distribution of the territories in the sub unit was not at all even — 4 clustered in the lower half, and one just penetrating the subunit near the upper right stake. Although not reflected by the maps, total WR foraging effort was distributed in a loose wire fashion. Very few birds foraged out in the shallow water in the upper left, although for 15 minutes there were a few birds near the upper left stake. i.e. almost all foraging by other ten, or non-ten levels was on territorial, located in the mud-vegetation mosaic territorial habitat features 5. subunit 1 25 x 25 m unit open water shallow mud-sand 1 3 2 A mud-vegetation mat mosaic of Azola After 1 hr 35 min observing, I felt that I could ID with fair certainty territorial birds while taking the 5 min interval sample. ID done on position + a quick flash of behavior there (no fixed nor individual markers). Therefore in the complex array in the lower half there was room for more. However, I felt it was small. … I deduce(?) this data at a ratio of territorial : non-ten birds (Phillaeaceae in Table pp 29): [illegible], 2/1, 4/1, 3/1, 3/2, averaging to 2.6:1, or 72% of birds being territorial. Note that the distribution of territories over the subunit is anything