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 x56 THE CONDOR I VOL. VII A. macao), parrots (.4mazona virenliceps and A. salvini, Pionus senilis and Piono- psitta haematotis), and parrakeets (UonurusfinscM) were exceedingly numerous, as were also two large toucans (Rampkastos tocardand R.. brevicarinatus), two smaller toucans, the common Pteroglossus torquatus and rare Selenidera spectabilis, being less abundant. Four species of trogons (7Yogon massena, 7: clatratus, T. caligatus and 7: tenellus) were common, and smaller birds almost without number We es- timated the total number of species to be found in this locality at not less than four hundred. Every day were heard many species of which we were not able to get even a glimpse, owing to the dense vegetation and difficult ground of the places which they frequented. At this place we witnessed a flight of migrating hawks, passing northward, which comprised hundreds of thousands of individuals. They were a small species (about the size of Z?uteo latissimns or B. brackyurus), most of them light colored underneath but many of them wholly dusky in color; whether there was more than one species we were not able to determine. The resident hawks at Bonilla were appar- ently few in number, the most numerous being the swallow-tailed kite (which by the way breeds there,), next in order being Rnpornis ruff- cauda and the beautiful snow- whiteLencopternis ghiesbrechli. One example of the rare ground cuckoo, Neomorphns salvini, was obtained, and also a single male of the beau- ti[ul white cotinga, Uarpod- ectes nitidns, shot by our taxi- dermist, Adin Lizno, from a small company which alighted in th.e "laurel" trees inside the corral close hy the house. A single umbrella bird (Uepha- lopterns glabricollis) was se- cured by Alfaro, being the only one seen; and on the higher potreros the Costa Rican bell-bird, Procnias tricarunculatus, was occasionally seen or heard, and I had the pleasure (?) of shooting a fine male from the top of a very high tree and after watching it fall straight down for a hundred feet or more see it lodge among some air plants thirty feet up, where I could not possibly get it. The note of this bell bird is most singular, sounding like a heavy stroke with a hard nmllet on a hollow log of hard wood, followed immediately by a wonderfully loud, clear and prolonged whistle--both easily heard at a distance of half a mile or more. Not the least fascinating part of our experience at Bonilla was the shooting of hummingbirds from the flowering guavao trees. These trees are small, open, and a On several occasions we saw them pulling long moss (JCillandsia) from the trees and carrying it to the nests they were building in tall trees on the potrero. b Not the tree which bears the fruitgua. ra?'a, so universally misprououneed "guava."