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256 THE CONDOR Vol. X! here at Santan, eating crumbs the children had dropped from their lunch in a shed. He stayed around several days and became quite tame. No others ap- peared on the north side of the river until September 30, when two males and one female were seen. That season I extended my search and included Bullock Orioles in the list of probable hosts, but with no success. The year 1913 they appeared earlier, the first being seen on May 5, when a male and two females were in evidence. The 10th of the month two pairs were seen at Santan; at Sacaton a male and three females were noted on May l?ig. 73. NEST OF ARIZONA HOODED ORIOLE CONTAINING TWO EGGS OF THE BRONZED COWBIRD AND FOUR OF THE DWARF COWBIRD 20. A few of the birds were observed here and at Sacaton all through the season, the last, a female, being seen September 18. I examined the nests of about twenty-five Bullock Orioles this season but without success. I wrote Mr. Cooke asking what birds were hosts for the cowbirds, and he included the Hooded Oriole in the list. So I was ready for the season of 1914. The birds appeared at Sacaton May 9 of this season, and on the 13th they came to Santan. Two males and one female have stayed around the barnyard and the school grounds all the season, and occasionally two other males and a fe-