. The birds of eastern North America known to occur east of the nineteenth meridian .. . KEY TO FAMILIES. AVATEK BIRDS. 17 GROUP 4. Toes, four; toes, not full webbed; small webs betweentoes at base, or toes entirely without webs; hind toe,sometimes small. Section I. Hind toe, raised above level of front toes. jj. Avocet. Avo(!et. Tarsus, ovor ;}.50 iuclics loug: bill, curved upward or sti-;iii^ i^

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1900