Went to the Canal at Great Falls this afternoon about 4:30 till 7:00. Very
birdy.
Heard many and saw one warbling vireo; heard and saw a  Prothonotary Warbler
on territory;  multiples of both orioles on territory;  also saw No.
Rough-wing swallows, two red-tails engaged in some sort of courtship flight
(very interesting),  a red-shoulder, swifts, eagles, many vultures of both
kinds.   Lots of bird sound all the time. All very nice indeed.
-- 
Donald Sweig
Falls Church, Va.