I saw two Nighthawks flying around at dusk (FOY) at our house this evening.  
I wonder if they migrate in groups, and then disperse when they get near to 
wherever they are going.  Around here, I usually only see 1-3 birds.  Twice I 
have seen more than this here, but it is uncommon to see more than a few at 
once.

Today at Mt. Calvert (Patuxent River Park, PG County) I saw a nice flock of 
20-25 Bobolinks.  It was hard to count them; they did not let me approach 
close (about 75 yards away at best), and they were mostly out of view on 
the ground in tall vegetation, presumably foraging.  I got the impression they 
are shy and/or nervous.  Individual birds flew up often, but usually not far, 
and then went back down in the grass again.  They were with a flock of 
blackbirds, about 25 of them also, and also having the same foraging behavior.

Looking forward to a great weekend!

Jeff Shenot
Croom