Delayed Dispersal and Territory Acquisition in Neotropical Buff-Breasted Wrens (<i>Thryothorus leucotis</i>)
Bibliographic record
Abstract
Delayed natal dispersal occurs in many tropical and southern temperate species. In these species, juveniles remain with their parents on natal territories for periods beyond the age of nutritional independence, in contrast to juveniles of northern temperate species, in which prompt dispersal is more typical. Despite its prominence in the life history of tropical and southern temperate birds and its importance in setting the stage for prolonged social interactions among kin, detailed knowledge about delayed dispersal in most species that inhabit these regions is lacking. We describe patterns of delayed dispersal, territory acquisition, and natal dispersal distances in a Neotropical species, the Buff-breasted Wren (Thryothorus leucotis). Male and female juveniles were both philopatric to natal territories and delayed dispersal for an average of 10 months after fledging. Most juveniles were no longer present on natal territories when their parents began to breed the following year, so opportunities for cooperative breeding were rare. Juveniles that stayed longer on natal territories were more likely to recruit into the local breeding population than individuals that dispersed earlier, and approximately two-thirds of juveniles that acquired territories within the study area shared at least one territorial boundary with kin. By remaining on natal territories for prolonged periods and acquiring territories near their parents, juvenile Buff-breasted Wrens may avoid potential costs associated with floating and may benefit from extended opportunities to interact with kin.
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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 | 0.000 |
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".