J.P. Myers 1974 Tryngita subruficollis (27) Estancia Medaland (35 KMS. of Juandito by road), Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 2 October (Contd) I suspect that two factors prevented success: 1) the moon - they were able to correct their flight away from us, and 2) lack of good coordination among nets, and practice. Early in the morning we attempted large V's and which applications, closing gaps of 100-200 m. This was too large (from above) net 200m net Later on we stayed close together, working out a an open V: (with this formation we swept the field until hearing Holters, then one side remained stationary while the other circled around as diagrammed, trying to encircle the birds. I believe that with attentive crews + no moon + a better idea of where the birds were even to begin with, this would have worked.) The birds' behavior impressed me as being remarkably calm - we were treated as if horses or some other usual nighttime intruder. 5 October see journal + flocking accent re another unsuccessful netting attempt. also flocking accent re roosting behavior 9 October re flocking accent re roosts 13 October see flocking accent " " 14 October " " " " (118) the tower, Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 15 October see flocking accent and journal re observation from dawn 7h am. good following data on directional flock. 18 October see journal re Grid 15 sample (8,11) Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires re flocking accent re roosting flights + also possible significance of guidance of buffalo opposed to golden