Control of provisioning in grey-headed albatrosses (<i>Thalassarche chrysostoma</i>): do adults respond to chick condition?
Bibliographic record
Abstract
Recent studies have been equivocal in determining whether long-lived seabirds are able to respond to chick nutritional status and regulate provisioning rates accordingly. With some exceptions, albatrosses and petrels that feed their chicks every 13 days seem able to respond to variability in chick condition. In contrast, those with longer overall feeding periodicity and that frequently show a dual foraging strategy, mixing short trips (which most benefit the chick) with longer, pelagic feeding excursions (during which time adults recover lost condition), tend not to regulate provisioning. We used a combined observational and experimental approach to determine whether feeding rates in grey-headed albatrosses (Thalassarche chrysostoma) were determined by parental foraging proficiency and (or) offspring demand. The results indicated that both factors were important. Adults showed consistent differences in provisioning characteristics, but chick satiation and solicitation also influenced the mass of the meal delivered when adults returned. Given a provisioning schedule characterised by relatively frequent colony visits and with no means of assessing the feeding success of their partner in the interim, the adjustment of meal mass upon arrival appears to be a simple means of tailoring prey delivery to changing chick requirements and is likely to be as effective as alternative strategies suggested for other species of Procellariiform.
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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 | 0.000 | 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) | 0.001 | 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 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".