PHILOPATRY, SITE TENACITY, MATE FIDELITY, AND ADULT SURVIVAL IN SABINE'S GULLS
Bibliographic record
Abstract
Quantifying the dynamics of populations is fundamental to understanding life-history strategies, and essential for population modeling and conservation biology. Few details of the demography and life history of the Sabine's Gull (Xema sabini) are known. Uniquely color banded Sabine's Gulls breeding in East Bay, Southampton Island, Nunavut, in the eastern Canadian Arctic, were examined from 1998–2002 to quantify vital rates. Generally, birds banded as chicks first returned to the breeding area in their third year, and the earliest case of first breeding was confirmed at three years of age. Sabine's Gull pairs showed strong tenacity to their breeding site from year to year, with most pairs nesting within approximately 100 m of the previous year's site, regardless of nest success. Individuals also showed strong year-to-year fidelity to their mates. However, birds whose previous partner failed to return, or returned late, were quick to remate. On rare occasions, birds were not seen in the study area in a particular year, but seen again in later years, either because they were missed, had dispersed temporarily outside the study area, or did not return to the breeding area in some years. Standard Capture-Mark-Recapture analyses were used to calculate local resighting and survival rates. Local annual survival rate of adult Sabine's Gulls was 0.89 ± 0.03, similar to annual adult survival estimates recently reported for other small to medium-sized gulls and terns. Filopatría, Apego al Sitio de Nidificación, Fidelidad a la Pareja y Supervivencia de los Adultos en Xema sabini Resumen. Cuantificar la dinámica de las poblaciones es fundamental para entender las estrategias de historia de vida y es esencial para la realización de modelos poblacionales y para la conservación biológica. Se conocen pocos detalles sobre la demografía e historia de vida de la gaviota Xema sabini. Para cuantificar sus tasas vitales, en este estudio se examinaron gaviotas anilladas que estaban criando en East Bay, Southampton Island, Nunavut (ártico canadiense) entre 1998 y 2002. Generalmente, las aves que fueron anilladas como pichones regresaron al área de cría en su tercer año, y el caso de primer apareamiento más temprano fue confirmado a los tres años de edad. Las parejas exhibieron un fuerte apego a su sitio de nidificación de año a año: la mayoría nidificaron a menos de aproximadamente 100 m del lugar en donde lo hicieron el año anterior, independientemente de su éxito de nidificación. Los individuos también mostraron gran fidelidad a sus parejas año a año. Sin embargo, las aves cuyas parejas no regresaron o lo hicieron tardíamente, encontraron nuevas parejas rápidamente. En raras ocasiones, algunas aves no fueron vistas en el área de estudio durante un año particular, pero fueron vistas en años siguientes, ya sea porque no fueron detectadas a pesar de estar presentes, porque se habían dispersado hacia afuera del área de estudio temporalmente o porque no regresaron al área de cría en algunos años. Se emplearon análisis estándar de captura, marcado y recaptura para calcular las tasas locales de reavistamiento y supervivencia. La tasa de supervivencia anual de los adultos de X. sabini fue 0.89 ± 0.03, un valor similar a los valores estimados de supervivencia anual de adultos documentados recientemente para gaviotines y otras gaviotas de tamaño medio.
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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) | 0.002 | 0.003 |
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; both teacher heads agree on what is shown here.
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".