°1918 ] Harlow, Breeding Birds of Penna. and N. J. 137 



their breeding must be accidental. I have found them common in Warren 

 Co., scarce in Pike, Wayne and Center Counties and one colony in Fayette 

 Co., the most southern locality known to me. They are reported breeding 

 in northern New Jersey but I have had no personal experience in that 

 region. I have data on three nests: 1, Warren, Warren Co., June 2, 1912, 

 six eggs; 2, State College, Center Co., May 30, 1915, four eggs; 3, Oak 

 Hall, Center Co., May 31, 1915, five eggs. 



81. Molothrus ater ater. Cowbird. — Fairly common but local 

 in southern New Jersey and somewhat local in Pennsylvania being scarce 

 in the mountainous sections. Data on forty-five eggs: average date May 

 28 (May 9- June 24). Most in a single nest three, in the nest of a Field 

 Sparrow. 



82. Agelaius phoeniceus phoeniceus. Red-winged Blackbird. — 

 Abundant breeder throughout, but rarer in the northern counties of Penn- 

 sylvania. Data on 136 nests give: average set, 4 (3-5); average date, 

 first sets, May 18 (earliest May 7), second sets, June 15 (latest August 4). 



83. Icterus spurius. Orchard Oriole. — Generally common 

 throughout southern New Jersey. Common in Pennsylvania south of the 

 middle of the state; absent in the northern counties and in the mountains. 

 Breeds regularly in Center County. Data on twelve nests give: average 

 set, 4 (3-5); average date, May 30 (May 25- June 12). 



84. Icterus galbula. Baltimore Oriole. — I have not found this 

 species nesting in New Jersey south of the latitude of Philadelphia. In 

 Pennsylvania it is rather scarce in the southern counties but very common 

 in the northern half of the state. Data on thirty-seven nests give: aver- 

 age set, 5 (3-6); average date, May 28 (May 23-June 20). 



85. Quiscalus quiscula quiscula. Purple Grackle. — Nests com- 

 monly throughout both states east of the mountains even in some of the 

 ridges east of the main Alleghanies and at Tobyhanna in the Poconos. 

 Data on seventy-two nests give : average set, 5 (3-6) ; average date, April 

 28 (April 22-May 14). 



86. Quiscalus quiscula aeneus. Bronzed Grackle. — Nests very 

 commonly west of the Alleghanies. Nests and dates differ in no respects 

 from those of the last. 



87. Carpodacus purpureus purpureus. Purple Finch. — I have 

 found the Purple Finch breeding commonly only in Monroe and Warren 

 Counties and once in Pike. Of three nests found in Monroe County 

 between June 9 and June 16, one contained four half fledged young and two 

 were just being completed. 



88. Loxia curvirostra minor. Red Crossbill. — The sporadic 

 nesting habits of the Crossbill render its breeding possible almost anywhere. 

 It undoubtedly nests at times in the mountainous districts of Pennsyl- 

 vania and I have seen small flocks in summer rarely in Pike and Wayne 

 Counties, while in Center County, on March 26, 1916, I found two mated 

 pairs, the males singing. 



89. Astragalinus tristis tristis. Goldfinch. — Breeds commonly 



