Muyes phil 1973 Journal 141 275km NW Villa Hayes Legd, Dept P.O. Hayes, Paraguay 26 July 7:30 PM 14°c, 13°c outside. Caught no bats. Walked over to the sheep shed, where we had seen bats under a [illegible] palm log (9 bats in all), & they had left. This morning we carefully replaced the log, quickly & w/, as little disturbance as possible. But this flew. Pub Hermer temp tonight or do they normally leave regardless of temp? Svercar came at about 8:00p. Swind pickup. Pilot I went for a walk at 6:30-10:30p, along river bed. Saw one fox near the buildings. Not even a caiman. Weather seemed to be clearing again (fran S) when we returned. Talked to Oscar for a while. Says that u. Repeated artificial insemination (u/e 4x) give 92-94% pregnancy. Tell heat by placing cows w/out bulls in enclosure. If denied the bull, a cow in heat will attempt to mount other cows. Other signs too but not as reliable. But this is a slow process. Inseminator wrote nlab due to quality of semen, et. He says Cherrua has 30 leguas or 56,000 ha. (1 Legua Paraguaya = 5 luas ters or 5^2=25 km^2) Previously overgrazed. & [illegible] Sparago (?) [illegible](was much more open but overgrazing encouraged the Prosopis, which has now pretty much taken over. can only be cleared mechanically at estimated expense of $700/ha. They will plant Pangola grass starting in Oct-Nov, at additional