SEASONAL VARIATION IN THE DIET OF THE BARN OWL IN NORTHWESTERN NEVADA
Bibliographic record
Abstract
The Barn Owl (Tyto alba) is a widespread predator of small mammals that is declining in many parts of its range. We analyzed the Barn Owl’s diet at Stillwater National Wildlife Refuge, Churchill County, Nevada, by identifying remains in pellets collected during the summer (May–September 2007) and winter (October 2007–February 2008). In 306 pellets (143 from summer, 163 from winter), we identified 796 vertebrate prey items including 9 genera of mammals and several species of birds. At both seasons, mammals, primarily of the genera Microtus (voles), Peromyscus (white-footed mice), Reithrodontomys (harvest mice), and Dipodomys (kangaroo rats) were found in >93% of pellets. Bird remains were found in 15.5% and 11.1% of pellets in summer and winter, respectively. Remains of giant water bugs (family Belostomatidae) were present in 7.7% of summer pellets but absent in winter. Although the diet was dominated by the same five categories of prey (four mammal genera and birds) at both seasons, the proportions of Microtus and Peromyscus declined during the winter, while those of Reithrodontomys and Dipodomys increased.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".