Table 1.
Percentages of prey classes in North American Short-eared Owl diets. Based on > 500 prey items from each study. Taken from Holt (1993b).
| No. Prey | Insects | Crustaceans | Birds | Mammals | Source | |
| Breeding Season | ||||||
|---|---|---|---|---|---|---|
| 2948 | 4.7 | 0.1 | 12.0 | 83.2 | Holt (1993a) | |
| 664 | – | – | 1.4 | 98.6 | Holt and Melvin (1986) | |
| 524 | – | – | 1.7 | 98.3 | Clark (1975) | |
| Nonbreeding Season | ||||||
| 4397 | – | – | 0.7 | 99.3 | Banfield (1947) | |
| 3971 | – | – | 0.6 | 99.4 | Clark (1975) | |
| 2185 | – | – | 0.7 | 99.3 | Colvin and Spaulding (1983) | |
| 1489 | – | – | 0.2 | 99.8 | Craighead and Craighead (1956) | |
| 1337 | – | 0.1 | 1.1 | 98.8 | Stegeman (1957) | |
| 1025 | – | – | 1.2 | 98.8 | Munyer (1966) | |
| 706 | – | – | 5.0 | 95.0 | Holt (1993a) | |
| 640 | – | 4.8 | 15.1 | 79.4 | Johnston (1956) | |
| 530 | – | – | 1.0 | 98.9 | Holt and Melvin (1986) | |
| Total Prey Items | 20,416 | |||||
