. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. ;;r, KKT TO THE BIRDS OF EASTERN VHMII FAMILY LARID/E. Gulls and Terns. SUB-FAMILY LAR1N/E. Gulls. Upper mandible, curved ; unguis (end of bill), not swollen ; middle tail feathers, about equal in length to the others ; tail, rarely dark, although sometimes tipped with black or brown; hind toe, small, but always present except in one genus; bill, with- out cere. 'Group 1. Wing, to 11 inches long. I nderparls. while; inner web of lirst primary, white, with black spot near
. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. ;;r, KKT TO THE BIRDS OF EASTERN VHMII FAMILY LARID/E. Gulls and Terns. SUB-FAMILY LAR1N/E. Gulls. Upper mandible, curved ; unguis (end of bill), not swollen ; middle tail feathers, about equal in length to the others ; tail, rarely dark, although sometimes tipped with black or brown; hind toe, small, but always present except in one genus; bill, with- out cere. 'Group 1. Wing, to 11 inches long. I nderparls. while; inner web of lirst primary, white, with black spot near the end; the tip, white; shaft of feather, white; adult birds have the bill dark red; in immature birds it is brownish. /.urnx fruiiklhtii. Franklin's (iull. See No. .'U. Underparts, white; inner web of first primary, white; the tip, black; bill, blaek: shaft of feather, white. /..//-HN //////<"/.//. riiderparts. white; inner web of tirst primary, about, half white; shaft of feather, dark brown on upper surface. In the adult the bill is blaek. tipped with yellow. .\i inn xniihiii. Sabine's (iull. See No. :{s. •Group 2. Wing, 11 to 13 inches long. Shallsol primarie~. black or dark brown ; nnderparts. not pure white (immature). /.iiri/x n/rii'illii. Laughing (iull. See No. .'{.'{. I 'nderparl-. pure white; inner \\eb f \]\-<\ primary, white, with black spot near the end, the tip, white; shaft | leathers, white. Adult bird- have bill dark red: in immature birds it i- brownish. fraiikliiiii. Franklin's Gull. See No. .'i 1. i,.i , SIT 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. Chicago : Field Columbian Museum
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Photo credit: © Library Book Collection / Alamy / Afripics
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
