. The birds of eastern North America known to occur east of the nineteenth meridian .. . 525 ^ 52S Family MNIOTILTID/E. Warblers. See page 27.). GROUP 3. Birds having wings measuring from to inches long.* Section 1. First primary less than half as long as third. Part 1. A small but distinct hook or notch at tip of upper mandible. , V( ry slightly hooked; primaries,10, tlif first often very short; toes, joinedtogether at base. Plain colored birds,usually greenish or grayisli, but often showa faint wash of yellow on underparts; tail,always without white spots. Family VIREONID^. Vi
. The birds of eastern North America known to occur east of the nineteenth meridian .. . 525 ^ 52S Family MNIOTILTID/E. Warblers. See page 27.). GROUP 3. Birds having wings measuring from to inches long.* Section 1. First primary less than half as long as third. Part 1. A small but distinct hook or notch at tip of upper mandible. , V( ry slightly hooked; primaries,10, tlif first often very short; toes, joinedtogether at base. Plain colored birds,usually greenish or grayisli, but often showa faint wash of yellow on underparts; tail,always without white spots. Family VIREONID^. Vireos See page For ilirections for measurement, see page viii. KEY TO FAMILIES. — LAND HIKDS. Part 2. Tip of upper mandible, not notched or hooked. Bill, as illustiiited; back, brown; luini), withconcealed white spots; outi-r t:iil fcntliers, sliortest;tarsus, scutellate. Family TROGLODYTID/C. Wrens. See page 31:2. 137
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