34 PROCEEDINGS OF THE 



miles northeast of Camden. It is the one described in Mr. 

 Rhoads' paper, American Naturalist, 1886, p. 785, and is still 

 the winter rendezvous for thousands of Crows. The exact roost- 

 ing spot has changed once or twice within the past twenty years, 

 from one patch of woodland to another, but a short distance off, 

 both lying south of the town. Crows fly to this roost from 

 Mount Ephraim, Haddonfield, Colestown, Moorestown and 

 League Island, while they formerly crossed over from Olney 

 and Frankford, flying high in the air. This latter flight has 

 now ceased, owing to the fact that the Crows no longer find a 

 feeding ground to the northeast of Philadelphia, where build- 

 ings are rapidly sj^reading. 



2. Valley Forge, Chester Co., Pa. 



Although not mentioned by Mr. Rhoads, this roost is a very 

 old one. Its location, however, seems to have shifted somewhat. 



Dr. W. E. Rotzell sends us the following information regard- 

 ing it: 



"The roost is now located at Diamond Rock, in the North 

 Valley hills about two miles west by southwest from Valley 

 Forge. I think I first visited the roost in 1899, and subse- 

 quently in 1900 and 1901. It was located in chestnut woods 

 and occupied probably ten acres, shifting from place to place as 

 the birds were disturbed. The wooded area in this region ex- 

 tends over the hills for miles. The Crows come from all points 

 of the compass for miles to reach this roost. I have noted 

 them as early as 3:30 p. m. six miles to the southward going 

 towards it. By 4 :30 many flocks may be seen flying in various 

 directions about the roosting-place often going a mile or two in 

 an apparently uncertain manner and finally returning to the 

 roost. As to the number of birds I would not pretend to guess, 

 there must have been thousands and thousands, and at times 

 they blackened the sky." 



Replies to inquiries regarding flight-lines show that the Crows 

 seek this roost from Shannonville on the Perkiomen, Port Ken- 

 nedy, Norristown, Conshohocken, Bryn Mawr, Radnor, Devon, 

 etc., as well as from Wawa and Westtown, and possibly from 

 West Chester. 



Some of the League Island Crows are also reported to fly in 

 this direction at night. 



