. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. LAIilD^. GULLS AND TERNS. 39 Section 2. Length, over 21; bill, over 2; underparts, not white. Outer webs of primaries, ash color (immature). Lams glaucus. Glaucous QuII. See Xo. 24. Outer webs of pritnaries, dark browu; wihg, over ; depth of bill at angle, over .90 (immature). Lams marhms. Great Black-backed Gull. See No. 27. Outer webs of primaries, dark brown; depth of bill at angle, under .90; wing, under (immature). Lams anjentatus smithsonianus. American Herring Gull. See No
. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. LAIilD^. GULLS AND TERNS. 39 Section 2. Length, over 21; bill, over 2; underparts, not white. Outer webs of primaries, ash color (immature). Lams glaucus. Glaucous QuII. See Xo. 24. Outer webs of pritnaries, dark browu; wihg, over ; depth of bill at angle, over .90 (immature). Lams marhms. Great Black-backed Gull. See No. 27. Outer webs of primaries, dark brown; depth of bill at angle, under .90; wing, under (immature). Lams anjentatus smithsonianus. American Herring Gull. See No. 30. Section 3. Length, over 21; bill, under 2; underparts, white. Back, grayish blue, more or less black on primaries. Larus argentatus smithsoniamis. American Herring Gull. See Xo. 30. Back, pale pearl color; pri- maries, whitish or pearl color, shading to white at tips. Lams leurDptrrns. Iceland Gull. See X'^o. Gall. Back, pale pearl color; primaries marked with slat_y gray. Lams kumlie,ni. Kumlien's Gull. See No. 2G. Hcniii^' 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 Columbian Museum. Chicago, Special edition printed for the Field Columbian Museum
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Keywords: ., bookauthorfiel, bookcentury1800, bookdecade1890, booksubjectbirds
