BULLETIN NO. 37 I02 



6. Turkey Vulture, Cathartes aura. Often found with- 



in my boundaries but does not nest nearer than 

 Paoli and Valley Forge. 



7. Red-tailed Hawk, TBiiteo borealis. It is a rather curi- 

 ous fact that I have never found this large Hawk 

 breeding on the Valley hills. It is common in the grove 

 timber to the south of us. 



8. American Barn Owl, Strix pratincola. Found in 

 the large timber near the head of Darby creek, a 

 mile from Berwyn. Rather rare. 



9. American Long=eared Owl, Asio wilsonianns. Has 

 been found recently nesting near Paoli and at Valley 

 Forge by Dr. W. E. Hughes, Rare. 



10. Great-horned Owl, Bobo virginianus. The same re- 

 marks might be made in regard to this species as to the 

 Red-tailed Hawk. It is rather uncommon. 



11. Hairy Woodpecker, T)ryohates villosus. 1 have 

 found it but once within this tract. Rare in this sec- 

 tion. 



12. Grasshopper Sparrow, i/}mmodramiis savannarum 

 pdsserinus. Found nesting at Daylesford. Not un- 

 common. 



13. Ro ugh = winged Swallow, Stelgidoptervx serripennis . 



Present in the valley. Common. 



14. Louisiana Water Thrush, Seiurus motacilla. A 

 pair discovered in 1899, half a mjle beyond the limits 

 of the block. 



Thus eighty-two of the ninety-odd species breeding in 

 the county are accounted for. The most notable of the missing 

 ones are the Cliff Swallow, and Tufted Titmouse. 



Excluding man and certain domestic animals, the greatest des- 

 troyers of our feathered friend, appear to be the fox, weasel, red 

 squirrel and black snake; and probably the most critical period 

 of its existence is immediately after it has left the home nest. 



