WRENS: ROCK WREN 
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finely spotted on or around the larger end and sometimes over the entire egg with 
reddish brown. 
Food. — Mainly harmful insects, including, by one record, 86 per cent of grass¬ 
hoppers. Young fed with locusts in Nebraska. 
Triangles mark breeding and breeding season records mainly in Upper Sonoran 
Zone 
General Habits. —The sprightly Rock Wren, with inconspicuous 
rock colors for its enemies, set off by a black crescent on its tail for 
following friends, who greets you with a fearless jerky bob, is a familiar 
figure among the sandstone ledges, side canyons, and barren rocky 
mesas of New Mexico, where its purring note from the rocks has a most 
friendly sound to the passing wayfarer. Besides its purr, it has a 
variety of calls. One of its common songs is a harsh kra-wee , kra-wee , 
