Introduction
Methods
Description of the Study Area
Data From Analysis of Pellets
Field Observations and Correlations
Economic and Ecologic Significance
Conclusions
Summary
Table 2. Frequencies of Occurrence of Food Residues in Pellets Collected in the Eastern Part of Harvey County—1953.
Table 3. Average, Maximum, and Minimum Percentages of Food Residues in Pellets Collected at Wintering Crow Roosts in the Western Part of the Study Area—1952-53-54.
Table 4. Frequencies of Occurrence of Food Residues in Pellets Collected at Wintering Crow Roosts in the Western Part of the Study Area—1952-53-54.
Literature Cited
