. The distribution of bird life in the Urubamba valley of Peru; a report on the birds collected by the Yale university National geographic society's expeditions. Birds. 36 BULLETIN 117, UNITED STATES NATIONAL 9? 90° 6S° BO' 75° 70* 65° 601 5S* Stf 4? 4<? 3? 30' 2S° Fig. 2.—semi-diagrammatic representation of the range of heliochera, a very distinct cotingine genus restricted to the forests of the humid temperate zone, which has pre- sumably been derived from a forest-inhabiting ancestor of the humid tropical zone at the base of the andes. the humid temperate zone forest, and hence
. The distribution of bird life in the Urubamba valley of Peru; a report on the birds collected by the Yale university National geographic society's expeditions. Birds. 36 BULLETIN 117, UNITED STATES NATIONAL 9? 90° 6S° BO' 75° 70* 65° 601 5S* Stf 4? 4<? 3? 30' 2S° Fig. 2.—semi-diagrammatic representation of the range of heliochera, a very distinct cotingine genus restricted to the forests of the humid temperate zone, which has pre- sumably been derived from a forest-inhabiting ancestor of the humid tropical zone at the base of the andes. the humid temperate zone forest, and hence the distribution of the genus, is doubtless less continuous than is here 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 Chapman, Frank M. (Frank Michler), 1864-1945. Washington, Govt. print. off.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, bookyear1921
