Age at First Return and Breeding of Razorbills (Alca torda) on the Gannet Islands, Labrador and Machias Sea Island, New Brunswick
Bibliographic record
Abstract
Resightings of Razorbills ( Alca torda ) banded as chicks on the Gannet Islands, Labrador (N = 1,873 resightings of 638 individuals) and Machias Seal Island, New Brunswick (N = 870 resightings of 291 individuals) were used to estimate the timing and age at first return to the natal colony and age at first breeding. In total, 14 one-year-old and 110 two-year-old birds were observed on land. All one- and two-year-old birds were seen for the first time on the islands late in the breeding season after laying had occurred, with two-year-olds returning to the colony on average three weeks earlier than one-year-old birds. Age at first breeding was significantly lower on Machias Seal Island than the Gannet Islands, 3.88 ± 0.13 SE and 4.40 ± 0.13 SE years, respectively (range two to six years, N = 123). Four two-year-old birds were observed engaging in courtship and breeding behaviors, including copulation. Overall, age at first return and breeding was lower than for known European Razorbill colonies and is likely due to low breeding densities and fidelity at the two North American colonies studied. Received 27 February 2007, accepted 09 October 2007.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".