Had an extremely enjoyable day birding today (Apr. 24).  Started out the day 
with a FOY BROWN THRASHER  at the end of our driveway.  Susquehanna SP 
in Harford County was excellent.  Best bird was an adult BLACK BILLED 
CUCKOO, found in the main parking area of the park (where the playground 
area is).  There is a trail at the SE part of the parking lot, and a footbridge 
that traverses a small creek-the bird was found by the creek.  Also found in 
the woods and open areas were a CERULEAN WARBLER, tons of BLUE GRAY 
GNATCATCHERS, a NORTHERN PARULA, WARBLING VIREO, a pair of BROWN 
THRASHERS being harassed by a NORTHERN MOCKINGBIRD, a juvenille 
BALTIMORE ORIOLE, several EASTERN BLUEBIRDS, CANADA GEESE, a  
NORTHERN FLICKER, and OSPREY.
Our next stop was the Rock Run Mill area where we added BLACK AND WHITE 
WARBLER, LOUISIANA WATERTHRUSH and NORTHERN ROUGH WING 
SWALLOWS.  The  Lapidum area had CASPIAN TERNS, tons of DOUBLE 
CRESTED CORMORANTS and COMMON YELLOWTHROAT.
Next, we were off to Swan Harbor, where a total of 3 AMERICAN BITTERNS 
kerplunked away, and we were able to get great looks, especially one that 
was seen by the bird blind.  Other birds were at least 2 pairs of BLUE WINGED 
TEALS, a pair of GREEN WINGED TEALS, flushed up at least 3 SORAs, 
WILSON'S SNIPE galore, PIED BILLED GREBE, NORTHERN ROUGH WING, BARN 
and TREE SWALLOWS which were chased down by a SHARP SHINNED HAWK, 
an adult and juvenille BALD EAGLE, a pair of WOOD DUCKS, HORNED LARKS in 
the surrounding fields and a CANADA GOOSE sitting on a nest.  Good birding 
and happy migration!