Correlation Between Tertiary Mammal Horizons of Europe and America: An Introduction to the More Exact Investigation of Tertiary Zoögeography. Preliminary Study (Google eBook)

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New York Academy of Sciences, 1900 - Mammals, Fossil - 64 pages
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Page 170 - acquired by a partial postjuvenal moult in July which involves the body plumage, tertiaries and wing coverts, but not the rest of the wings nor the tail.
Page 271 - First winter plumage acquired by a partial postjuvenal moult in July and August in eastern Canada, which involves the body plumage and the wing coverts, but not the rest of the wings and the tail.
Page 276 - A partial postjuvenal molt, involving all the contour plumage and the wing coverts, but not the rest of the wings or the tail, occurs in July and August.
Page 49 - II. ADAPTIVE RADIATION of ORDERS AND FAMILIES AS BEARING ON GEOGRAPHICAL DISTRIBUTION. This law causes the independent origin not only of similar genera but of similar families and even of similar orders. Nature thus repeats herself on a vast scale, but the similarity is never complete or exact. When migrations are favored by over-population or geographical changes, a new and severe test of fitness arises by the mingling and competition of the parallel types. Under the operation of these laws a most...
Page 345 - Observations on the laws which appear to influence the assumption and changes of plumage in birds Trans.
Page 343 - ... Brazilian Expedition, No. I, from Rio de Janeiro to Porto Alegre, by HS Smith. — Unnatural attachments among animals, by JD Caton. — Butterfly hunting in the desert, by WG Wright —The extinct Rodentia of North America, by ED Cope.
Page 272 - ... differs little from the first winter dress, but of richer brown above with darker wing edgings, the chestnut more abundant on the crown and the streakings below more conspicuous." Adults have a partial prenuptial molt in the spring, as in the young birds. Of the females he says : "The sexes are very similar in all plumages, females usually a little browner and with less yellow. In first "winter plumage with very little or no chestnut on the crown and later practically indistinguishable, but undergoing...
Page 232 - Above, including sides of head and wing coverts, olive-brown. Below, paler with darker broad fused stripes on the throat, breast, sides and flanks, the chin paler, the abdomen and crissum dull white often yellow or buff tinged. A crest not well marked is found on the crown. Anterior frontal feathers, lores and partial orbital ring dull black ; posterior quadrant of orbital ring, submalar streak and narrow superciliary line white or pale buff. Chin bordered laterally by dull black. Wings and tail...
Page 71 - Skeleton of Teleoceras fossiger. Notes upon the Growth and Sexual Characters of this Species. Ball. Ämeric. Museum of Natural History. Vol. X. Article IV. March, 1898. — — A Complete Skeleton of Coryphodon radians. Notes upon the Locomotion of this Animal. Ebendaselbst. Article VI.
Page 341 - Late Fall and Winter Notes on some Birds observed in the Vicinity of Princeton NJ ib.

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