Investigación ambiental: Envíos recientes
Mostrando ítems 21-25 de 1439
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The decline of an adaptation in the absence of a presumed selection pressure
(1989)The colonial nesting Village Weaver (Ploceus cucullatus) lays eggs that vary in ground color and pattern, but individual females lay similar eggs each time. Tests on captive African stocks have shown that females reject ... -
Origin of the bird fauna of the West Indies
(1948)Although our knowledge in ornithology of the West Indies (which include the Antilles, Cayman and Swan Islands, St. Andrew and Old Providence, and the Bahama Islands) far surpasses that in any other natural science, there ... -
In memoriam : Alexander Wetmore
(1980)If anyone could be called the 20th-century doyen of American ornithology, it was Alexander Wetmore. From his very youth, the study of birds was his passion. He trained himself as a biologist and never wavered from his ... -
A review of the forms of the Brown Pelican
(1945)When W. L. Abbott began sending birds from Hispaniola more than 25 years ago, Charles W. Richmond and I recognized that the Brown Pelicans of that island were smaller than those of the southeastern United States and therefore ... -
Notes from Dr. R. Ciferri on the Birds of Hispaniola
(1932)In connection with the recent publication of a list of the birds of Hispaniola, Dr. R. Ciferri of Santiago, Dominican Republic, has forwarded certain observations that it is desirable to have on permanent record.
