16 PROCEEDINGS OP THE 



noticed on July 11, 1900, low down on the mountain near an 

 orchard. 



46. Troglodytes aedon. House Wren. 



47. Pants atricapillus. Black-capped Chickadee. Quite num- 

 erous on the upper slopes of the mountain, and on several occa- 

 sions their cheery notes were heard around the house by the river. 



48. Hylocichla mustelina. Wood Thrush. Abundant, but 

 only in the deep timbered section at the foot of the ridge. 



49. Merula migratoria. Robin. 



50. Sialia sialis. Bluebird. Not noticed until 1903, and 

 then seen on three occasions, July 22 and 24 and August 17, 

 between Lehigh Gap and Slatington. From my observations it 

 would appear that the Blue-bird was practically absent from 

 this region in 1900, 1901 and 1902. At all events it was so 

 scarce as to totally escape notice. 



