DELAWARE VALLEY ORNITHOLOGICAL CLUB. 23 



Black-throated Green Warbler — Dendroica virens. Abun- 

 dant wherever hemlocks or white pines occurred. An unusually 

 late nest was found Aug. 2nd, holding at the time three well in- 

 cubated eggs. It was fifteen feet from the ground at the outer 

 end of a limb of a large white pine, and was composed of small 

 twigs, strips of bark, rope fibre, grasses and spiders' egg-cases, 

 lined with fine grasses and cow hair. 



Catbird — Dumetella carolinensis. A scarce summer resident. 

 The reason for the lack of abundance of these birds I was unable 

 to determine, for there were many places evidently well suited 

 to their needs. One nest found July 31st, held three half-grown 

 young, and was five feet from the ground in a rhododendron 

 bush at the edge of a thicket in a slightly open spot in the 

 woods. This nest was interesting to me in that it showed where 

 these birds were probably found before the country was cleared 

 of the large forests that existed at one time. 



House Wren — Troglodytes aedon aedon. A fairly plentiful 

 summer resident in the open valleys. A nest found Aug. 6th, 

 held four incubated eggs, and was eight feet from the ground in 

 a limb of a large dead apple tree in an orchard. This is my 

 latest breeding date for this species. 



Red-breasted Nuthatch — Sitta canadensis. On July 22nd, 

 one of these birds was seen feeding in the top of a large white 

 pine halfway up the side of a mountain. This was a little early 

 for it to be a fall migrant, so this species undoubtedly breeds 

 here. 



Bluebird — Sialia sialis sialis. A common summer resident. 

 On July 14th, a nest was found with five slightly incubated eggs, 

 six feet from the ground in a cavity in the trunk of a large pear 

 tree, at the edge of a field. 



