Category: Science - Biology
FROM a purely practical point of view the most important of the relations of native birds to man are the economic. The esthetic value of birds is great--greater, indeed, than that of any other group of animals; and that this is a real and especially treasured value is not to b...
The blue jay[45] (fig. 17) is a conspicuous member of our bird population east of the Plains, especially in autumn when his brilliant plumage contrasts vividly with the brown> f...
2. Part 2The brown thrasher[14] (fig. 5) breeds throughout the United States east of the Great Plains, and winters in the South Atlantic and Gulf States. It visits the garden or orchard,...
3. Part 3Stomachs of nestlings, varying in age from 24 hours to some that were nearly fledged, were found to contain 89 per cent animal to 11 per cent vegetable matter. The largest items...
1. Part 1FROM a purely practical point of view the most important of the relations of native birds to man are the economic. The esthetic value of birds is great--greater, indeed, than th...
5. Part 5The nighthawk, or bull-bat,[54] breeds throughout most of the United States and Canada, and winters in South America. It is strictly insectivorous, and hence does no damage to c...