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162 THE CONDOR Vol. xx Fig. 30. MOUNTAIN PLOVER PARTIALLY COVERING tIER EGGS WITHIN TWO FEET OF THE PHOTOGRAPHER, [ ? 'n' . I J?-? -- ]]i ?' prairies (numbers have been taken elsewhere in the state) would seem to indi cate they are in a measure gregarious during the nesting season. All sets collected contained three eggs and the dates are as follows, two being secured by other parties. In 1917: May 20, two sets; May 27, one set; May 28, one set; May 29, one set; June 7, one set. In 1918: May 18, one set; .?Iay 22, one set.' Fig. 31. EGGS OF MOUNTAIi?I PLOVER, IN PLACE. PHOTOGRAPIIED MAY 20, 1917.
