Notice bibliographique
Résumé
Oberholser's Revision of the Ladder-backed Woodpeckers.1-This revision is based on the material available for study in the principal museums of the United States numbering altogether 560 specimens brought together by Mr. Ridgway for use in the preparation of his Birds of North and Middle AmericaJ Under Mr. Oberholser's standard of subspecies "the six currently recognized races are here increased to fifteen."Dryobates scalar'ks bairdi of the A. O. U. Check-List is here treated as extralimital with the assigned type locality the State of Hidalgo, Mexico.From the old bairdi of the Check-List are carved D. s. symplectus and D. s. cactophilus, the former ranging from southeastern Colorado south through Oklahoma and Texas into eastern Mexico, the latter from southeastern California, Arizona and New Mexico south into the State of Durango.The other seven new forms are from various localities in central and southern Mexico, and Nicaragua.The ranges of all the forms are indicated on an accompanying map.--J. A. A. Oberholser's Revision of the Hairy Woodpeckers. 2 --This study, the author tells us was undertaken largely at the request of Mr. Ridgway, and is based on the material he had gathered from the leading museums of this country for use in the preparation of the forthcoming fifth part of his ' Birds of North and Middle America,' the specimens of this group alone numbering 1070.As is well known, the Hairy Woodpecker group ranges from Alaska and northern Canada south to Panama, and comprises many well-marked forms.The fourteen hitherto currently recognized subspecies are here increased to twenty.The nanhe of the Northern Hairy Woodpecker is changed from Dryobates villosus leucomelas (Boddaert) to D. v. septerttriortalis (Nuttall).Boddaert's nanhe was based on Brisson's description of his "Picus varius canadensis" and on D'Aubenton's plate of Buffon's "Epeiche du Canada," the locality being simply "Canada."Mr. Oberholser finding that the measurements given by Brisson and indicated in DAubenton's drawing appear to be "altogether too small for the large race of northern Canada," the name leucomelas is treated as a synonym of D. villosus wgllosus and replaced by the next available designation, based on birds from the Saskatchewan River.Inasmuch as the range of overlapping individual variation in the length of the wing in the two forms is one third of the average difference between them, and as Brissons specimens are quite likely to have conhe from either Quebec or Montreal (Oberholser records specimens of the northern form from as fax A Revision of the Forms of the Ladder-backed Woodpeckers (Dryobates scalaris [Wagler]).
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,002 |
| Bibliométrie | 0,001 | 0,003 |
| Études des sciences et des technologies | 0,001 | 0,003 |
| Communication savante | 0,000 | 0,002 |
| Science ouverte | 0,003 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».