British Ornithologists’ Union Records Committee (<scp>BOURC</scp>): 50th Report (October 2019)
Bibliographic record
Abstract
The following changes have been made to the British List. 'Richardson's' Cackling Goose Branta hutchinsii hutchinsii (Richardson)Add subspecies B. h.hutchinsii † (Richardson) to the British List One, third-calendar-year or older, Holkham Freshmarsh, Norfolk, 6-23 February 1999 (photographed).After many years of debate, some clarity about the taxonomic relationships, identification and distribution of the North American 'white-cheeked' geese of the genus Branta has been achieved (North American Birds 62: 344-360, Br.Birds 109: 677-684).This allowed the acceptance of Cackling Goose Branta hutchinsii to the British List (Ibis 159: 238-242).However, at that time, it was felt that the first British record, from Plex Moss and Formby Moss, Lancashire during November 1976, could not be conclusively identified to subspecies.Following this decision, a number of candidates were considered by BOURC for subspecies-level acceptance, resulting in a unanimous decision that the Holkham Freshmarsh individual from November 1999 showed features consistent with the subspecies B. h.hutchinsii.Furthermore, there was no evidence of a captive origin, with the bird seen in a flock of Pink-footed Geese Anser brachyrhynchus, a plausible carrier species for a vagrant crossing the Atlantic.Thus the record and subspecies was accepted to Category A.Breeds in north and central Canada and Greenland, migrating to winter in Texas, USA and Mexico. Egyptian Goose Alopochen aegyptiaca (Linnaeus)Add to Category C5 One, adult, Cowpen Bewley, Cleveland, 8 April 2018 (photographed, ringing recovery of colour-ring field sighting).This species is already placed in Category C1 of the British List (and also in Category E*) , due to the presence of a naturalized population in England (https://app.bto.org/mapstore/StoreServlet?id=59).However, the increase of a much larger naturalized population on the near
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.260 | 0.214 |
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".