. The birds of Illinois and Wisconsin . 0. a. praticola, by its larger size, the yellow stripe over the eye,and somewhat browner coloration. It occurs as a winter visitant in Illinois and Wisconsin, but cannot be considered common. Nelson states that it arrives in largenumbers with the Longspurs in October and disperses over the prai-ries; but Mr. Woodruff considers it a rare winter visitant in north-eastern Illinois, which agrees with my experience, as the Museum doesnot possess a specimen of this species taken in the state. In Wisconsin Kumlien and Hollister state that it is found on theprai


. The birds of Illinois and Wisconsin . 0. a. praticola, by its larger size, the yellow stripe over the eye,and somewhat browner coloration. It occurs as a winter visitant in Illinois and Wisconsin, but cannot be considered common. Nelson states that it arrives in largenumbers with the Longspurs in October and disperses over the prai-ries; but Mr. Woodruff considers it a rare winter visitant in north-eastern Illinois, which agrees with my experience, as the Museum doesnot possess a specimen of this species taken in the state. In Wisconsin Kumlien and Hollister state that it is found on theprairies during winter, ofttimes in considerable numbers. In a series of eastern specimens the wing measurements are asfollows: Males, wing (carpus to tip), to inches. Females, wnng (carpus to tip), to inches. 216a. Otocoris alpestris praticola Horned : Upper Mississippi Valley and the Great Lakes region,breeding eastward to New England, south in winter to South Carolina,Texas, etc. - • , A. ^. ^ . /• ■<5 Horned Lark. The Prairie Horned Lark differs from the eastern form, O. alpestris,in having the line over the eye whitish (not yellow), the throat butfaintly tinged with yellow and in being somewhat smaller and , (carpus to tip) males, 4 to inches; females, to 542 Field Museum of Natural History — Zoology, Vol. IX. It is a common resident throughout the year in Illinois and Wis-consin, and is one of the few birds which may be observed in flockson the open fields and prairies during the winter. It breeds in Illinoisfrom March to May, more commonly in April, although the lateCaptain Charles Bendire states that it has been found breeding nearMilwaukee, Wisconsin, as early as February 23. The nest is composedof grass placed on the ground. The eggs are 3 to 5, pale olive or olivewhite, speckled and finely marked with pale olive brown, rarely withcinnamon brown. They measure about .85 x .60 inches. 21


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