More Rapid Wear of Bands on Common Goldeneye Than on White-winged Scoter
Bibliographic record
Abstract
ult female Common Goldeneyes, (Bucephala clanqula), recaptured in nest boxes at the University of Saskatchewan Field Station at Emma Lake, Saskatchewan, have shown evidence of unusually rapid band wear.From 44 banded adult females recaptured in June of subsequent years, seven have carried bands so thin that the numbers were barely visible.In spite of the unpleasant extra work entailed in band schedule reporting of rebanded birds, these bands were replaced.Only in 1985 did we weigh the badly worn bands removed from 3 of 8 recaptured females, all having been banded as adults.The weight of bands 786-38175 and 786-38174, placed in June 1980, was 510.7 mg and 581.2 mg, and that of 786-38174, placed in June 1980, was 510.7 mg and 581.2 mg, and that of 786-38190, placed in June 1982, was 584.7 mg.Unfortunately reference archive bands of the same size 6 series were unavailable from the Bird Banding Laboratory.On their advice, we took the mean weight of three unused bands, 836-90929, 930 and 931, weighing respectively 862.9 mg, 861.0 mg and 857.6 mg, as roughly representative of the weight of the 786-series.From this we calculated the rate of wear for the three goldeneye bands, yielding weight losses of 41% and 32% for the 5-year-old bands and 32% for the 3-year-old band.The annual weight losses from this small sample of size 6 bands are respectively 8.2%, 6.4% and 10.7% per year, with a mean of 8.4%.wear on larger bands, but may also depend on where the bird winters; although Hatch and Nisbet expected, as we did, to find more rapid wear in salt water, bands from inland tern colonies wore more rapidly than those from coastal colonies.In handling 79 recaptured White-winged Scoters, Melanitta fusca, at Redberry Lake, Saskatchewan, we have found a much lower rate of wear in size 7A bands.All 36 scoters recaptured in 1985, up to 16 years after banding, carried well preserved bands, but an adult female dead on her nest that year carried a thin band, 1037-81316, place in 1977, weighing only 1.13 g.In addition, in 1984, 2 of 43 adult female scoters recaught on their nests carried bands that were unduly thin and were replaced.Band 577-29704, placed on an adult female scoter in 1972, weighed 1.19 g at recapture; 1007-88847, placed in 1976, weighed 1.13 g.Unworn bands from the same series weighed 1.49, 1.49 and 1.50 g.Annual rates, for these selected individuals demonstrating band wear, were only 1.7%, 3.0%, and 3.5%.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".