. Bulletin of the British Ornithologists' Club. Birds. Figure 1. Flight silhouettes of Buteo polyosoma (a) and B. poecilochrous (b), based on the following measurements (Table 1): 1, total length; 2, wing-span; 3, forearm length; 4, wing length; 5, innermost secondary length; 6, outermost secondary length. individual in a locality are noted. In the Andean region records are allo- cated in three life zones. (1) Cordillera: slopes and valleys on the crest of the eastern Andean chain to perpetually snow-covered mountain-tops, above 4500 m. (2) Puna: rolling hills, groups of hills and plains on th
. Bulletin of the British Ornithologists' Club. Birds. Figure 1. Flight silhouettes of Buteo polyosoma (a) and B. poecilochrous (b), based on the following measurements (Table 1): 1, total length; 2, wing-span; 3, forearm length; 4, wing length; 5, innermost secondary length; 6, outermost secondary length. individual in a locality are noted. In the Andean region records are allo- cated in three life zones. (1) Cordillera: slopes and valleys on the crest of the eastern Andean chain to perpetually snow-covered mountain-tops, above 4500 m. (2) Puna: rolling hills, groups of hills and plains on the Altiplano (the inter-Andean plateau), between 3700 and 4500 m. (3) Mesothermic valleys: drier intermontane valleys of the eastern Andes, with xeromorphic vegetation, principally scrub and trees generally near water courses; from 1000 to 3600 m. These valleys have been extensively deforested. B. polyosoma La Paz Dpt. 1: Ulla-Ulla Reserve, 4600 m; high puna, moraine hills near cordilleran zone, short alpine grass, 22 Jul 1982. 2: Tiawanacu, 3800 m; semi-arid puna, stony hills and plains, tussock grass, some areas dotted with thola scrub (Lepidophyllum) and some fields of potatoes on the slopes, 3 Sep 1983. 3: Achuma de Santa Ana, c. 45 km SW of Viacha, 4000 m; puna, gentle. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : The Club
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1893
