JPMycs 1974 Camp leit 100 Km SE of Santiago del Estero by road, Pcia de Santiago del Estero, Argentina Saltraticula multicolor 10 June cont'd 90 Km N of Tucuman by road, Pcia de Tucuman, Argentina Prosopis (?) scrub forest with several large clearings. Little undergrowth except for a man-dead grass. Some standing water. Few of the Prosopis are over 6" in diameter, now grow to over 4 meters high. Trunks are spaced regularly - 10'-15' apart. Their crowns form a continuous thick cover. Coragyps atratus, 10 Polyborus plancus 30 Buteo sp. 1 Vandellus chilensis 4 Columba picui 100+ Zonaidia auriculata 100+ Leptotila sp. 20 Otus sp. 2+ (sour) Nyctalus maculatus 1 Chrysoptilus melanolaimus 2 Drymornis bridgii 2 Furnarius rufus Paroaria coronata 2 Sicalis citrina or lutola 2 Lepidopispingus pusillus 10 Coryphistria alaudina 6 Upcorthi serthoides Syndactylus albocens 4 (?) Grallaria leuca pyrrhophia Xolmis irupero 1 Pitangus sulphuratus 50 Seropphaga subcrista 2 Seropphaga nigricans 1 Troglodytus aedon Mimus triurus 3 Poliopila doucicola 10 Saltator coerulescens 2 Bonotrichia capensis 5 11 June 20 Km SE of Las Viñas via Rte 9, Pcia de Salta, Argentina thorn scrub forest - low with at least 4 species of scrub legumes, one fairly substantial one. in some places there is substantial grass cover beneath the shrubs, and there are several patches measuring several hundred yds² which were bare beneath. Epiphytes common. One blooming - obviously hummingbird pollinated. Also several other hummingbird Type flowers in bloom. they were typically along a network of dry Arroyos which work through the thorn scrub.