Bibliographic record
Abstract
The eastern grey kangaroo, Macropus giganteus, and the western grey kangaroo, M. fuliginosus, occur over an extensive zone of sympatry, but there has been no record of hybridisation between these sibling species in the field. The two species can be reliably distinguished by their characteristic pelage, which is grey-brown in eastern grey kangaroos and chocolate brown in western grey kangaroos. The pattern of colour on the face is particularly distinctive: the pale grey face of the eastern grey kangaroo contrasts with dark shading around the eyes, whereas the western grey kangaroo has a monochrome dark brown face. We report a sighting of a probable hybrid grey kangaroo in June 2000 at Willandra National Park (33° 13’ S, 145° 07’ E), western New South Wales. This individual was an adult female, which was intermediate in phenotype and was accompanied by a possible back-crossed sub-adult. In view of this and other reports of putative hybrids, we urge greater scrutiny of grey kangaroos in the sympatric zone.
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".