J.P. Myers 1974 Calidris fuscicollis (17,28) Estancia Modeland, 35 Kms. of Sunchu by road, Pdo. de Madariaga, [illegible] Bs. Aires, Argentina 17 November (cont'd) that the longer a WR is able to remain in a specific site, that the more developed is its foraging space-specificity, the more likely is it to aggress in a species-specific fashion.) 1020 - aggression appears in cycles, going through another dell. 1025 - a WR in (2,0) and (3,0) 11.24-74C is establishing itself on this (w) side, as well as a (5,1) region. [illegible] new ten bird in (6,2), wedging itself between 11-17-34 A and the central area 1031 - beginning to go up off shore to preea. 1036 - no territorial bird in the Estancia NE part (0,1) - that area just suffered an invasion - ? new WR - a-1 there was no supplating. 1038 The new flock is spreading out somewhat, moving downstream at 1043 - The W-S.W. aggression confusing because of the windetta aspect, not only do they aggress but play pursue - flying 10 m^2 over the heads of other birds + continuing to fight when they land. and afterwards there does not appear to be a real adjustment or correction in position. 1045 - in northernmost area of 117-74A's territory - i.e. where 'D' is wedging in, two birds; 'D' one of them, went into a crouch. 'A' came up from S and chased both. 1048 - frequency of S-S picking up, or at least there are more long distance, consistent supplantations occurring. 1049 'C' continuing, air 'D'. 1051 flock took off glided upstream 30 sec later. began preening, then 20 seconds later took flight again + went to W side of stream. sitting quietly there now at 1053. 1054 beginning to drift back to grill, some flying others foraging directionally. 1054-5 flow down. 1055 continuing in, filling in same areas as used prior to original flight. 1056 - supplantation + fighting 1057 - 'A' is back, judging from supp's going on at usual sites. 1110 - finished last census. see journal for general results, [illegible] % TB book for map of aggression sites + distribution of territories as well as raw census data. Will return tomorrow morning if poss; pls re-calculate. 18 November see journal - rain this morning made it impossible to reach the 1728 region 19 November see journal. at (17,28) water level has increased to submerge the habitat completely. [illegible] WR within the limits of the grid.