J.P. Myers 1973 02 White rumped 320 Km NW of Villa Hayes on lagoon 0.5 Km Soy entrance to Juan Zalazar, Dept Boqueron, Paraguay Sept 5 contd right across 180' or so, and is following a semi-pelleted plower across wet mud (out of mud). Staying within 3' of plower, foraging in pecks (not probes). Walking in a slower fashion than plower - walks 4 or 5", stays a few seconds picking, and then goes to new place. This contrasts w/ classic feeding of plower. Back to description of pond - dry mud extends ~30' from edge of wet mud making this a very open area, especially as vegetation surrounding it is quite low. 0715 - pup still following plower. 2 more plowers showed up. The 4 birds flew around together as a flock when I went after them. Río Salado at Puente Romero ~27 Km SW of San Miguel del Monte, Partido del Monte, Pcia de Buenos Aires, Argentina Sept 15