. Bird-lore . rows, and comparatively few Jays, are found south of the Isthmus ofPanama. Season.—Changing the nature of their food as circumstances and Jays are usually resident wherever found. Our Crows andBlue Jays, however, migrate and are less common, or wanting, at thenorthern limit of their range in winter than in summer. Color.—Crows and their near allies are, as a rule, entirely or largelyblack; Jays are usually more or less brightly colored, blue being variedwith black and white, being a common type of coloration. In bothgroups the sexes are essentially alike in color. H
. Bird-lore . rows, and comparatively few Jays, are found south of the Isthmus ofPanama. Season.—Changing the nature of their food as circumstances and Jays are usually resident wherever found. Our Crows andBlue Jays, however, migrate and are less common, or wanting, at thenorthern limit of their range in winter than in summer. Color.—Crows and their near allies are, as a rule, entirely or largelyblack; Jays are usually more or less brightly colored, blue being variedwith black and white, being a common type of coloration. In bothgroups the sexes are essentially alike in color. How to Name the Birds 23 External Structure.— Crows and Jays, with few exceptions, have astout, rather long blunt bill, the nostrils are covered by projecting stiff,hair-like feathers; the feet are strong, the scales on the tarsi beingclearly marked. The outer tail-feathers are usually the shortest, thisbeing especially true of the Jays. Appearance and Habits. — Our species are too well known to require. AMERICAN CROW Oiu-third si/.c description. It is to be noted, however, that Crows are more terrestrialthan Jays and arc icalkers, the latter being arboreal, and, consequently,hoppers. Crows, in the winter, gather in great flocks and frequent acommon roost, while Jays at this season are usually fount! in small com-panies. Both our Crows and Hlue Jay migrate by day. 24 Bird - Lore Song.—While neither our Crows nor Jays may be said to sing, in thecommonly accepted sense of the word, both have marked vocal abilityand an extended vocabulary of call-notes which evidently are possessedof a definite significance. ^^^^BB^t
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