I have noticed the late afternoon southerly  flight of Am. and Fish 
Crows building over the past 2-3 weeks.  Why do they roost in the White 
Flint area?  Have they always roosted there, even pre-development of 
Rockville?  In the morning do they head out in all different directions 
from the roost and am I just seeing one particular "stream" of crows 
returning to the central roost? 

Thanks

Andy Martin
Gaithersburg, MD