^°^9lf ^"^1 Harlow, Breeding Birds of Center County, Pa. 475 



lar but not very common summer resident throughout the cultivated 

 sections. 



58. Hirundo erythrogastra. Barn Swallow. — Very abundant 

 breeder throughout the valleys, nesting in barns or under bridges. Usu- 

 ally completes its sets of four or five eggs by May 10 or May 15. 



59. Stelgidopteryxserripennis. Rough-winged Swallow. — Regu- 

 lar but not very common breeder along the open streams. Four nests 

 have been located at the following dates. 



June 11, 1909. Six newly hatched young, in stones under bridge. 

 June 11, 1909. Five fresh eggs in Kingfisher's hole. 

 May 30, 1910. Six fresh eggs in Kingfisher's hole. 

 May 18, 1912. Five fresh-eggs in Kingfisher's hole. 



60. Bombycilla cedrorum. Cedar Waxwing. — Common summer 

 resident nesting in orchards and shade trees. Three occupied nests have 

 been located. 



June 20, 1911. Three fresh eggs. 



June 29, 1911. Three fresh eggs. 



August 17, 1911. Four slightly incubated eggs. 



61. Vireosylva olivacea. Red-eyed Vireo. — Abundant summer 

 resident in open woodland and about estates as well as in the dense woods 

 of the mountains. Nesting begins about the first week in June. 



62. Vireosylva gilva gilva. Warbling Vireo. — Rare but regular 

 summer resident, apparently confined to shade trees along the town streets. 

 Have observed them in Boalsburg and State College throughout the 

 breeding season. 



63. Lanivireo flavifrons. Yellow-throated Vireo. — Scarce but 

 regular summer resident in open woods, at least two pairs breeding regularly 

 on the College campus, where the young birds have been observed in late 

 June. But one nest has been located which contained four fresh eggs on 

 June 2, 1910. 



64. Mniotilta varia. Black and White Warbler. — Regular and 

 fairly common summer resident throughout the mountain forests, where 

 its song is one of the features. But one nest has been found, on May 18, 

 1910, which held five fresh eggs. The locality was Stone Valley. 



65. Vermivora chrysoptera. Golden-winged Warbler. — Rare 

 summer resident. One pair was observed near Monroe Furnace on June 3, 

 1910. 



66. Dendroica sestiva sestiva. Yellow Warbler. — Very common 

 summer resident throughout the open valleys, nesting most frequently in 

 orchards. 



67. Dendroica caerulescens caerulescens. Black-throated Blue 

 Warbler. — Rare summer resident in the colder laurel swamps of the 

 mountains. Has been observed at Stone Valley and Bear Meadows. 



68. Dendroica magnolia. Magnolia Warbler. — Fairly common 

 breeder in the hemlock groves of the mountains, being found most fre- 

 quently at the gaps and along streams. 



