. The birds of Illinois and Wisconsin . 28 Field Museum of Natural History — Zoology, Vol. IX. GROUP 4. Toes, four, not full webbed; small webs be-tween toes at base, or toes entirely without webs;hind toe, sometimes very small. SECTION 1. Hind toe, raised above level of front Avocet. Avocet. Tarsus, over inches long; bill, curved upward or straight. Family RECURVIROSTRIDiE. Avocets. See pages 91, Q5.

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