[jt55401]

Closes #825

Evidence

• Adds American Wigeon (Mareca americana). GBIF accepts species key 2498155 and resolves Anas americana 2498154 as its synonym; iNaturalist 485176 is a species-level taxon.
• lifespan_y: 2.0 is the midpoint of ADW's sex-specific wild mean lifespans, 1.7 years female and 2.3 years male. It is derived with the calculation recorded; the separate 21-year wild maximum is excluded. ADW CC BY-NC-SA 3.0 text is a last-resort source for this statistic and a few core behavior claims, retained with its own attribution. USFWS and USFS provide more permissive morphology/range/habitat evidence.
• The US curve was regenerated with iNaturalist place 1 for the United States. The fetcher's default place 10319 resolved to the US Virgin Islands and produced zero iNaturalist observations, so the original curve was GBIF only. Corrected licensed tier A inputs are 8,396 usable iNaturalist observations and 2,562,585 usable GBIF observations. Both contribute to the corrected monthly curve. Occurrence frequency is a proxy for activity.
• A species-local FSM swims and forages in water, grazes on land, rests at night with a high-hunger feeding path, and flees by flying. There is no inherited perching behavior. Authored thresholds and diet shares are marked as judgment.

Preview and validation

I inspected idle, walk, swim, fly and rest in Chromium on the final record. All rendered; wings and legs occupy their intended parts. Swim is a stylised surface pose, and the fly pose extends the wings and legs. No obvious clipping was seen at the default camera angle. BioCLIP was not run.

Commit: c643230 (activity correction), following da83366 (record)
species/mareca-americana: 0 errors, 1 warning, provenance 35/35
NonCommercialLicense: ADW CC BY-NC-SA 3.0, last resort as disclosed above
self-check: 634 files, 0 findings
all-species and all-locale validators: exit 0
pytest tools/tests: 347 passed, 8 skipped
write-attribution: no species diff after commit

• Issue claimed; current record and PR state checked
• Taxon providers, source claims/licences and wild lifespan checked
• Corrected US activity scope, provider counts and usability reviewed
• Behavior actions and month/day transitions reviewed
• Attribution regenerated and committed
• Species, repository, locale, self-check and tests passed
• Every declared pose previewed
• One species per PR; no private data or restricted source dump committed

[jt55401]

Hourly maintainer review: c643230

Disposition: changes requested.

species/mareca-americana/species.json needs these concrete corrections:

• traits.length_m is 0.515, while its provenance correctly computes 0.505 m from the USFWS Measurements range 42–59 cm. Use 0.505 or cite/document a different supported transformation. The current 0.515 equals the midpoint of ADW's different 45–58 cm range, an inferred explanation for the mismatch.
• look.extra_parts[name=white_cap] is fully enclosed by its head: offset plus half-size reaches at most [0.42,0.32,0.35] of parent size, within the half-extents on every axis. I viewed idle, walk, swim, fly and rest: green eye patches show, but the male's defining white cap is absent. Move it onto the head surface and repeat all poses.
• traits.diet, habitat.use, resource weights and distance thresholds contain authored quantitative allocations without derived: true or specific explanations. The repeated generic “categorical mapping” note does not explain 75/25 diet or 35/65 habitat use. Mark the authored values and explain them individually. USFS GTR NE-108, American Wigeon, printed p.170/PDF p.174, describes an almost wholly vegetarian diet with occasional snails; it does not establish 25% invertebrates. Reassess that allocation, and replace the copied USDA-report text in provenance entries that actually point to the separate USFWS page.

Evidence checked: ADW Lifespan/Longevity gives female/male mean lifespans 1.7/2.3 years, separately from the 21-year maximum; the equal-sex two-year Low/derived proxy is accurately labelled, with NC-SA last-resort use disclosed. Its mass range supports the correctly calculated 0.9975 kg midpoint. USFWS supports 84 cm wingspan, native North American distribution, Canadian nesting, aquatic feeding and urban turf grazing. The GTR's author page establishes federal-agency authorship; its credited third-party illustrations were not reused. Provider checks confirm accepted GBIF 2498155, synonym Anas americana 2498154 pointing to it, and active iNaturalist species 485176. New record preserves existing species.

Activity correction is verified: US place 1 and GBIF country US, permissive tier-A filters. Fresh iNaturalist 8,397 versus submitted 8,396; GBIF 2,562,585 with 2,442,889 month-bearing. Fetcher recomputation matches all 12 stored values. The local FSM has explicit night exits and a high-hunger night-feeding path with a dawn exit; no month predicates or inherited perch action. Swimming/terrestrial resource reachability was not tested in a private runtime.

Public checks pass on this head: focused validation/attribution (0 errors, one NC warning, 35/35 provenance), self-check, all species/locales, pytest 347 passed and 8 skipped; attribution regeneration leaves no tracked diff. Hosted validate is green. Hold merge for the quantitative/provenance and white-cap corrections. Private import/live acceptance unassessed.