J.P. Myers 1974 Flocks 2 Arroyo Chico (15,27) Estancia Medaland, 35 km S of Juan de los Andes by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 6 September (conts) So in 10 minutes 0942 → 0952 2105 estimated Zemaida flew S over this area of Estancia Medaland, whereas less than 20 flew north. #>of flocks 20 x x 10 50 100 150 200 250 flock size The graph shows that most flocks have less than 100 individuals, but that many are under 50, but that almost as many are between 50 and 100. (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 10 September see Tryngite sp. accent. See Pseudoboliste vivaceus sp. accent (15,21) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 14 September see evening in journal re upland shorebird roosting flocks. (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 15 September see Tryngite sp. accent re directional and static flock foraging modes. (15,21) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see evening journal re upland shorebird roosting flocks. (0,13) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see bairdii spp. accent re mixed flock behavior in evening [illegible] (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 17 September see journal, Tryngite sp. accent re directional vs static flocks (24,16) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see journal re roosting flocks 18 September see journal re roosting flocks. 20 September see Tryngite sp. accent for roosting flocks. 21 September see journal re probable effect of trapping flocks.