Chapin, James Paul, 1889-1964.Lang, Herbert, 1879-1957.American Museum Congo Expedition (1909-1915)2006-02-222006-02-221924http://hdl.handle.net/2246/5778Taxonomic remarks -- The three species and their variation -- Geographic distribution in West and Central Africa -- Nomenclature in Pyrenestes ostrinus -- Geographic distribution in East Africa -- Food of Pyrenestes -- Possible origin of forms -- Conclusions -- Aids to identification -- Distribution of forms, and list of specimens examined.p. 415-441 : ill., maps ; 24 cm.Includes bibliographical references.8552227 bytesapplication/pdfen-USQH1 .A4 vol.49, art.4, 1924Pyrenestes -- Size.Pyrenestes -- Variation.Bill (Anatomy)Birds -- Size -- Congo (Democratic Republic)Birds -- Variation -- Congo (Democratic Republic)Birds -- Size -- Africa.Birds -- Variation -- Africa.Birds -- Congo (Democratic Republic)Birds -- Africa.text