. Les oiseaux d'eau de l'Amérique du Nord . ondulés ci-dessus. Tête entirelydestitute de tout panaches ornementales; plaine de plumage laiteuse au-dessus, blanchâtre en dessous. Ptychoramphus aleuticus. L'AUK ALEUTIAN. Uria aleutica, Pall. Zoog. Rosso-as. II 1826, 370. Ptychoramphus aleuticus, Brandt, Bull AC St. Petersb. II 1837, 347. — Cass, dans les bandes B. N.Am 1858, 910. —Baim), Cat N. AM. B. 1859, non 724. — Coues, Pr. CA. NAT. SCI. Philippe. 1868, 52 ; clé, 1872, 343 ; liste de contrôle, 1873, n° 625; éd. 2, 1882, no 862. — Eidgw. Nom. N. AM. B. 1881, non 751.Mergulus Cassinii, Gambel, Pr. CA. NAT. SCI. Philippe. 1845,

• Contributeur: Reading Room 2020 / Alamy Banque D'Images
• ID de l’image: 2CPE853
• Taille du fichier: 7,1 MB (280,4 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1557 x 1605 px | 26,4 x 27,2 cm | 10,4 x 10,7 inches | 150dpi

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. The water birds of North America . rugated above. Head entirelydestitute of any ornamental plumes or crest; plumage plain slaty above, whitish beneath. Ptychoramphus aleuticus. THE ALEUTIAN AUK. Uria aleutica, Pall. Zoog. Rosso-As. II. 1826, 370. Ptychoramphus aleuticus, Brandt, Bull. Ac St. Petersb. II. 1837, 347. — Cass, in Bands B. N.Am. 1858, 910. —Baim), Cat. N. Am. B. 1859, no. 724. — Coues, Pr. Ac. Nat. Sci. Philad. 1868, 52; Key, 1872, 343; Check List, 1873, no. 625; ed. 2, 1882, no. 862. — Eidgw. Nom. N. Am. B. 1881, no. 751.Mergulus Cassinii, Gambel, Pr. Ac. Nat. Sci. Philad. 1845, 266 (coast of California) ; .Tourn. Ac. Nat. Sci. Philad. II. 1850, pi. 6. 518 THE DIVING BIRDS — PYGOPODES. Hab. Whole Pacific coast of North America, from the Aleutian Islands south to San Diego, Cal. ; breeding as far south as the Farallones. SP. Char. Adult: Above, entirely uniform plumbeous black ; under part and sides of thehead, with lore part and sides of the neck, plumbeous, blending gradually into the blackish of. P. aleuticus. the pileum and nape ; a white spot on the lower eyelid. Lower parts, from the jugulum back, immaculate white, the sides, beneath the wings, and the femoral region plumbeous. Dill black, the basal third of the mandible yellowish or pale colored ; iris white ; legs and feet bluish anddusky in life, brownish dusky in the dried skin. Young : Apparently similar to the adult. Total length, 8.00-9.50 inches; extent, 16.00-18.50; wing, 4.70-5.25; tail, 1.50-1.75;culmen, .75; depth of bill at base, .40; tarsus, 1.00; middle toe, with claw, 1.40.

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