R. B. Hamilton 1967 Journal Jul 25 San Francisco Calif to Panama City Panama I departed from Oakland airport by helicopter at about 0710. Earlier I had notices that Robin's began soaring at about 0430 when it was still quite dark. Weather was overcast when we left San Francisco. One Black-Bellied Plover was observed flying at Oakland airport. The route down me to Los Angeles when we landed. From L.A. we headed E to El Paso when we veered slightly S and went directly to Guatemala City (passing through 2 time zones) passing over Tampico Mexico. The weather was mostly clear over U.S. when cloud desert was seen. Unfortunately it was quite cloudy over most of Mexico and I could not see much of the land. I did see some Mountain Lows near Tampico Mexico and also observed many vultures emptying into Gulf of Mexico as we flew on. Here to E of Tampico. There were no sign of shipping in Gulf of Mexico; I did see about 4 coast liners in the Gulf lanes. They all were about the same distance from land and could not readily estimate the distance. When flying over Central America it was very cloudy but we managed to get into Guatemala City after some circling. This city was very beautiful with no obvious sign of slum. The area seemed cleaner with tree disappearers, in their own private clouds in the vicinity of the city. I thought I saw at a rather high altitude, 4 birds in groups of 3 and I was seen. They were foraging but appeared to be Brazilian or some similar species. From Guatemala City we proceeded to Panama City but nothing was seen on way there.