Concord, 
1895. 
Sept , 9 . 
1899 . 
may 21 . 
Chorde lie's virgin ianus . 
Mass. Migrating. 
There was an unusually heavy and we 11 -marked migration 
of Nighthawks beginning at about 5 P.M. and lasting until 
nearly dark. They all came from the north-east in ones, twos, 
and threes and went off towards the south-west, a course they 
invariably follow here. While crossing the meadows they de- 
scended and fed for a few minutes by flying about in irregular 
lines but none of them tarried long. Indeed I have rarely 
seen them appear to be in greater haste to push on southward. 
We counted 18 birds in all. 
Feeding about the tops of oaks. 
As twilight was deepening into night two Night Hawks ap- 
peared following the edge of the woods and hovering and cir- 
cling about the tops of the oaks like great moths. Apparent- 
ly they found insects plentiful for they beat back and forth 
over the same ground several times. Earlier in the evening 
I heard a Night Hawk peeping and saw him high in air but he 
did not boom. 
