Yuppie bandicoots of inner western Sydney - in hiding or urban renewal?
Bibliographic record
Abstract
Long-nosed bandicoots Perameles nasuta were thought to have disappeared from inner western Sydney by the mid to late 1960s. This paper documents recent (2002-present) records of long-nosed bandicoots in the urban areas of inner western Sydney, including carcases (n=7), animals live-trapped or observed by us (n=7), and reports from the public (n=35). We also surveyed for bandicoot diggings in 88 urban parks and found 12 which contained possible diggings. Most of these records are concentrated in the suburbs of Dulwich Hill, Marrickville, Lewisham, and Petersham in an area of less than 1.9 km by 1.1 km (approximately 95 ha) in the local government area (LGA) of Marrickville, but when other scattered records are included, come from an 8.5 km x 6 km area in the LGAs of Ashfield, Canada Bay, Canterbury, and Leichhardt. A pilot radio-tracking study of two adult females found that they foraged almost exclusively in urban backyards and nested by day under old buildings. One female provided enough data for home range analysis, and had a home range of 2.7 ha (MCP) or 1.47 ha (KL95%); the core home range (KL50%) was only 0.16 ha. There were no signs that either individual avoided activity during peak hour traffic, although they often did not come out to forage for a whole night, or only foraged for a few hours within a night. We suggest that this might be a form of predator avoidance behaviour since feral and domestic cats were common in the area, and/or that they are able to obtain sufficient food in the short times they are active. We also speculate on the origins of these animals.
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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 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".