Population trends of Black Terns from the North American Breeding Bird Survey, 1966-1996
Waterbirds
Links
- The Publications Warehouse does not have links to digital versions of this publication at this time
- Download citation as: RIS | Dublin Core
Abstract
Data from the North American Breeding Bird Survey indicate a survey-wide decline in Black Terns (Chlidonias niger) at an average rate of 3.1% annually during 1966-1996. Black Terns in Canada decreased at an average annual rate of 3.5% during this interval, while the United States population showed no significant trends. These long-term declines largely reflect trends prior to 1980, when the continental, Canadian, and United States populations decreased at average annual rates of 7.5%, 5.6%, and 11.9%, respectively. Most population trends were reversed during the 1990s, causing trend estimates over the 1980-1996 interval to become more positive. Associations between patterns of change in Black Terns, Mallards (Anas platyrhynchos), and numbers of ponds in the northern Great Plains suggest some relationships exist between habitat availability and the population trajectories.
Suggested Citation
Peterjohn, B., Sauer, J., 1997, Population trends of Black Terns from the North American Breeding Bird Survey, 1966-1996: Waterbirds, v. 20, no. 3, p. 566-573.
ISSN: 19385390 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Population trends of Black Terns from the North American Breeding Bird Survey, 1966-1996 |
| Series title | Waterbirds |
| Volume | 20 |
| Issue | 3 |
| Year Published | 1997 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Waterbirds |
| First page | 566 |
| Last page | 573 |