Cowbird Parasitism and the Population of the Kirtland's Warbler
| Autor: | Harold Mayfield |
|---|---|
| Rok vydání: | 1961 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cowbird education.field_of_study Biotic component biology Creatures Ecology fungi Population Parasitism biology.organism_classification 010603 evolutionary biology 01 natural sciences Warbler 03 medical and health sciences 030104 developmental biology Kirtland's warbler Abundance (ecology) Genetics education General Agricultural and Biological Sciences Ecology Evolution Behavior and Systematics |
| Zdroj: | Evolution. 15:174 |
| ISSN: | 0014-3820 |
| DOI: | 10.2307/2406078 |
| Popis: | The geographic range of a species and the abundance of the species within the geographic range are determined by a large number of interacting environmental factors. The analysis of these factors is particularly difficult in birds, which as warmblooded animals are less dependent on the environment than ectothermal animals, and as highly mobile creatures can escape seasonal changes in climate by migration. The relative importance of certain physical and biotic components of the environment can be studied best in those species which are currently showing a conspicuous increase or decrease in numbers or in size of geographic range. A bird species that appears to be undergoing a rapid decline in numbers at the present time is the Kirtland's Warbler, Dendroica kirtlandii. |
| Databáze: | OpenAIRE |
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