. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. Group 1. Wing, to inches long. Forehead, -svliite; hill, hhick; umlerparts, white; hack, pearl ; crown, hlack (adult in summer) ; hack and crown, mottled (immature). Sterna antillarum. Least Tern. See Xo. 48. * Group 2. Wing, to inches long. Head and underparts, hlack (adult). A patch of hlack hehind the ej-e; l)ack of head, dusky; rest of head, white (immature). Hydrochelidon nigra snrinamensis. Black Tern, See Xo. 51. * Group 3. Wing, to inches long. Outer tail f
. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. Group 1. Wing, to inches long. Forehead, -svliite; hill, hhick; umlerparts, white; hack, pearl ; crown, hlack (adult in summer) ; hack and crown, mottled (immature). Sterna antillarum. Least Tern. See Xo. 48. * Group 2. Wing, to inches long. Head and underparts, hlack (adult). A patch of hlack hehind the ej-e; l)ack of head, dusky; rest of head, white (immature). Hydrochelidon nigra snrinamensis. Black Tern, See Xo. 51. * Group 3. Wing, to inches long. Outer tail feathers, pure white. Inuer wel) of outer tail feather, gray. Sterna dougalU. Roseate Tern. See No. 47. Sterna forsteri. Forster's Tern. See No. 44. * Group 4. Wing, to 11 inches long. Outer web of outer tail feather, darker than inner web; hack, ptrl gray; hreast, washed with pearl gray; hill in adults, red, tipped with black; tarsus, usually over .70. Sterna hirundo. Common Tern. Wilson's Tern. See No. 45. Inner web of outer tail feather, darker than outer web; back, pearl gray; breast, white; bill in adults, black, slightly yellowish at tip. Sterna forsteri. Forster's Tern. See No. 44. Outer tail feather, entirely pure white; back, pearl gray; breast, white, often tinged with faint rose color; bill, in adults, black with basal portion, red. Sterna dougalli. Roseate Tern. See No. 47. * For directions for measurement, see page Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cory, Charles B. (Charles Barney), 1857-1921; Field Museum of Natural History. Chicago, Special edition printed for the Field Columbian museum
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Keywords: ., bookauthorcory, bookcentury1800, bookdecade1890, booksubjectbirds
