The American kestrel (Falco sparverius) population of both Harrison and Washington Townships, Delaware County, east-central Indiana, showed a decline from December, 1985 to March, 1986, stabilization, and then a rise in June and July, 1986. Surveys reflect a larger kestrel population in Harrison than in Washington Township. Sex ratios from December to July indicate a greater number of males than females in both townships. Pasture was the preferred habitat of both male and female birds. No correlation was found between numbers of kestrels sighted and weather conditions. Kestrels occupied two of six nest boxes in the area and fledged a total of ten young. U. S. Fish and Wildlife Service data on 1,617 banded kestrels were analyzed. The independent effect of banding flyway on average distance traveled between banding and recovery was not significant. The independent effect of latitude was significant for the total study population of 1,617 kestrels but was not significant for a subsample of 213 birds which exhibited true migratory movement. Sex had no effect on distance traveled. The interaction of banding flyway and latitude on distance traveled was highly significant.
| Identifer | oai:union.ndltd.org:BSU/oai:cardinalscholar.bsu.edu:handle/175236 |
| Date | January 1986 |
| Creators | Britt, S. Ellen |
| Contributors | List, James C. |
| Source Sets | Ball State University |
| Detected Language | English |
| Format | viii, 48 leaves : ill. ; 28 cm. |
| Source | Virtual Press |
| Coverage | n-us-in |
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