. Die Vögel von Illinois und Wisconsin. rly ein sehr häufiger Sommer Wohnsitz in allen stark bewaldeten Regionen über Bäche; derzeit morecommon während der Wanderungen, Frühling und Herbst. =•= == * * in Betracht zu sehende Zahlen nisten noch in günstigen Lokalitäten in den zentralen und nördlichen Teilen des Staates und an einigen wenigen Orten im südlichen Wisconsin, wie etwa am Delavan Lake. (Kumlien and Hollister, Birds Wisconsin,1903, S. 20.) Unterfamilie FLULIGULINIE. Die Sea Ducks. Die Mitglieder dieser Unterfamilie haben die Rechnung breit, und eine Klappe ormembranous Lappen auf der Hinterzehe. Obwohl als Seeenten eingestuft 332 Feld Mus

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. The birds of Illinois and Wisconsin . rly a very common summer resident inall heavily wooded regions about streams; at the present time morecommon during the migrations, spring and fall. =•= == * * Consider-able numbers still nest in favorable localities in the central andnorthern parts of the state and in a few places in southern Wisconsin, as about Delavan Lake. (Kumlien and Hollister, Birds Wisconsin, 1903, p. 20.) Subfamily FULIGULINiE. The Sea Ducks. The members of this subfamily have the bill broad, and a flap ormembranous lobe on the hind toe. Although classed as sea ducks 332 Field Museum of Natural History — Zoology, Vol. IX. because they are partial to salt water, manyof the species occur in large numbers onthe interior lakes, rivers, and marshes. Theirfood consists of mollusks, small fish, andcrustaceans, as well as the roots of aquaticplants and seeds. Their nests are usuallyplaced on the ground or among rocks, al-though a few species, such as the Golden-eye, Buffle Head, etc., laytheir eggs in hollow trees.. .:^ Genus MARILA Oken. 51. Marila americana (Eyton). Redhead. Aythya americana (Eyt.), A. O. U. Check List, 1895, p. 52.Local name: Redhead Duck. Distr.: North America, breeding from Maine, northern Michigan, Wisconsin, and California northward. Winters in numbers fromChesapeake Bay to Florida and along the Gvilf coast to Texas, casualas far south as Mexico and Jamaica. Adult male: Head and neck, brownish chestnut; lower neck andupper breast, blackish; back, apparently grayish, being white pencilled with fine, wavy lines ofblack; speculum, gray-ish ; upper feathersedged with black, therest narrowly tippedwith white. Length, 21; wing, 8.40; tarsus, 1.60; bill, 2.20.Q Adidt female: Bill, bluish, showing an in-distinct bar near the end; head and neck, reddish brown, palest on thesides of the head, becoming ashy on the sides of the head; upperthroat, white; breast and sides, brownish; belly, white; under tailcoverts and lower belly, sometimes washed wi

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