. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. il RI1IDS OF KASTFIIN NolMH AMK1!!C\. The Toes are sometimes three or four (the Ostrich has but two), sometimes two in front and two behind ; two in front Miid one behind ; or, in one family (not North America ). all four turned forward. Some families have the toe- joined or fused together for part of their length, as in the Kingfisher. Some species have webbed feel, others have the toes armed with curved talons, ami so on ; but the various difference- with which we wish to become fami
. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. il RI1IDS OF KASTFIIN NolMH AMK1!!C\. The Toes are sometimes three or four (the Ostrich has but two), sometimes two in front and two behind ; two in front Miid one behind ; or, in one family (not North America ). all four turned forward. Some families have the toe- joined or fused together for part of their length, as in the Kingfisher. Some species have webbed feel, others have the toes armed with curved talons, ami so on ; but the various difference- with which we wish to become familiar can better be illustrated than Foot of Sparrow I' • f three-toed Woodpecker Types of Feet. — Land I'.inls. THE BILL. The Hill consists of an upper and a lower mandible, both of which are blc. The sliMpe is of liTeat assistance in determininii- the family to which the -pccie- beloii'_f. I-'oiir principal typo arc 1. EpignattlOUS. I'pper mandilile longer than lower; the tip bent or hooked over the end of lower mandible. (Kxamples: Hawks, (lulls, I'ctrels, I') 2. Hypojrnathous. Lower mandible, longer than upper mandilile. ( : Skimmers, /,'//////«7/o/(.s. ) 3. Paragnathous. I'.oth mandibles of about e<|iial length. 4. PletagnathOUS. .Mandibles crossed. (Kxample: Crossbill. L».rt'<i.). 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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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
