. The birds of eastern North America known to occur east of the nineteenth meridian .. . Horned \ FAMILY LOONS. 27 FAMILY GAVIID/E. Loons. Toes, four; front toes, palmate (full webbed) ; bill, pointed;^^^^^\ tarsus, flattened ; hind toe, with flap or small lobe. * Group 1. Wing, to 11 inches long. Back, with white spots ; ihront., white or whitish (immature or wint(>r). <4avin hiinnir. Red=throated Loon. See Xo. 7. Back, without distinct wliite spots; tlie fealliers, edged with ashy; thi-oat, wliit< ordusky (immature or winter). i-i-avin <trriii-iix. BIack=th
. The birds of eastern North America known to occur east of the nineteenth meridian .. . Horned \ FAMILY LOONS. 27 FAMILY GAVIID/E. Loons. Toes, four; front toes, palmate (full webbed) ; bill, pointed;^^^^^\ tarsus, flattened ; hind toe, with flap or small lobe. * Group 1. Wing, to 11 inches long. Back, with white spots ; ihront., white or whitish (immature or wint(>r). <4avin hiinnir. Red=throated Loon. See Xo. 7. Back, without distinct wliite spots; tlie fealliers, edged with ashy; thi-oat, wliit< ordusky (immature or winter). i-i-avin <trriii-iix. BIack=throated Loon. See Xo. 0. Head, ashy iiray ; tluoat, hlaclv (adult). Gavia iirctiriis. Black=throated Loon. See Xo. (■).Throat, liray; front of necl<, cliestnut brown (a(hilt). (rm-i(i hnnmi. Red=throated Loon. See Xo. 7. * Group 2. Wing, 11 to 15 inches 1. Depth of bill at base, more than .85. Head, Idack (aduh). Gavia imlnr. Loon. See Xo. ^) of liead, grayisli; lliroat, wliite ^ immature or winter 2)lumage). Gavin imhcr. Loon. See Xo. 5. Section 2. Depth of bill at base, less
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1900
