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Comparative Breeding Behavior of Ammospiza Caudacuta and A. Maritima
Taxonomically the Genus Ammospiza has received the attention of ornithologists for more than a century. Nevertheless, the behavior of no species of the genus has been studied extensively. The papers of Montagna and Tomkins are the only works that mention behavior and natural history in any detail. There has been an increasing awareness of the […]
Author: Woolfenden; Glen E. Language: English Genre: Zoology572 KB ↓Download ↑Convert ♥Buy It
Comments on the Taxonomy and Geographic Distribution of Some North American Rodents
Comments on the Taxonomy and Geographic Distribution of Some North American Rodents In preparing maps showing the geographic distribution of North American mammals we have found in the literature conflicting statements concerning the subspecific identity of several rodents. Wherever possible, we have examined the pertinent specimens. Results of our examination are given below. Our studies […]
Author: Hall; E. Raymond, Kelson; Keith R. Language: English Genre: Zoology48 KB ↓Download ↑Convert ♥Buy It
Comments on the Taxonomic Status of Apodemus peninsulae
Comments on the Taxonomic Status of Apodemus peninsulae, with Description of a New Subspecies from North China In the past several years the United States National Museum has received a large number of mammals from central and southern Korea through the auspices of the Commission on Hemorrhagic Fever of the Armed Forces Epidemiological Board. Among […]
Author: Jones; J. Knox Language: English Genre: Zoology↓Download ↑Convert ♥Buy It
The Baculum in the Chipmunks of Western North America
The baculum is the bony part of the penis. In the species of the subgenus Neotamias the proximal part of the baculum is termed the shaft, and the distal upturned part is termed the tip. On the dorsal side of the tip there is a longitudinal ridge termed the keel. The proximal end of the […]
Author: White; John A. Language: English Genre: Zoology60 KB ↓Download ↑Convert ♥Buy It
Aspects of Reproduction and Development in the Prairie Vole
Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster) The prairie vole is by far the most abundant mammal on the University of Kansas Natural History Reservation and on grassland areas throughout northeastern Kansas. This vole therefore affects the vegetation, perhaps more than any other native vertebrate, and it is an important food […]
Author: Fitch; Henry S. Language: English Genre: Zoology249 KB ↓Download ↑Convert ♥Buy It
Birds Illustrated by Color Photography – February, 1898
I suppose that a habit of minute observation of nature is one of the most difficult things to acquire, as it is one which is less generally pursued than any other study. In almost all departments of learning and investigation there have been numberless works published to illustrate them, and text books would fill the […]
Author: Various Language: English Genre: Ornithology, Zoology532 kB ↓Download ↓Mirror ↑Convert ♥Buy It
Birds Illustrated by Color Photography – January, 1898
We regret that a full monograph of this remarkable bird cannot be given in this number. It is the giant among Pigeons and has some characteristics, on account of its great size, not common to the family. Very little has been written about it, and it would be a real service to ornithology if some […]
Author: Various Language: English Genre: Ornithology, Zoology513 kB ↓Download ↓Mirror ↑Convert ♥Buy It
Birds, Illustrated by Color Photography, Vol. 2, No. 6
In an early number of BIRDS we presented a picture of the common Bluebird, which has been much admired. The mountain Bluebird, whose beauty is thought to excel that of his cousin, is probably known to few of our readers who live east of the Rocky Mountain region, though he is a common winter sojourner […]
Author: Various Language: English Genre: Ornithology, Zoology637 kB ↓Download ↓Mirror ↑Convert ♥Buy It
Birds, Illustrated by Color Photography, Vol. 2, No. 5
The tanagers are birds of such uncommon beauty that when we have taken the pictures of the entire family the group will be a notable one and will add attractiveness to the portfolio. [See Vol. I, pp. 31 and 216.] This specimen is also called the Summer Red-bird or Rose Tanager, and is found pretty […]
Author: Various Language: English Genre: Ornithology, Zoology645 kB ↓Download ↓Mirror ↑Convert ♥Buy It
Birds, Illustrated by Color Photography, Vol. 2, No. 4
It was our intention in this article to give a number of instances of a pathetic nature concerning the sufferings of the various species of birds which it has been, and still is, a habit with many people to keep confined in cages totally inadequate for any other purpose than that of cruelty. The argument […]
Author: Various Language: English Genre: Ornithology, Zoology649 kB ↓Download ↓Mirror ↑Convert ♥Buy It