Like everyone else, I too birded Susquehanna State Park and Swan 
Harbor.  I may have found more if I started earlier, but what kind of 
guy would I be if I went birding and left a sink full of dishes for my 
wife? : )

:Susquehanna State Park (those bluebells are amazing):
Double-crested Cormorant (many)
2 Osprey
2 Bald Eagle
1 Northern Harrier
1 Cooper's Hawk
1 Red-tailed Hawk
1 Spotted Sandpiper
3 Caspian Tern
5 Chimney Swift
1 Eastern Phoebe
2 Great Crested Flycatcher
3 White-eyed Vireo
1 Yellow-throated Vireo
1 Warbling Vireo
1 Red-eyed Vireo
2 Purple Martin
10 Northern Rough-winged Swallow
5 Ruby-crowned Kinglet
10 Blue-gray Gnatcatcher
1 Wood Thrush
10 Northern Parula
5 Black-throated Blue Warbler
Yellow-rumped Warbler (many)
2 Black-throated Green Warbler
2 Yellow-throated Warbler
3 Cerulean Warbler
2 Black-and-white Warbler
5 American Redstart
3 Prothonotary Warbler
1 Worm-eating Warbler
3 Ovenbird
2 Kentucky Warbler
1 Hooded Warbler
2 Scarlet Tanager
1 Chipping Sparrow
4 White-throated Sparrow
4 Indigo Bunting
1 Baltimore Oriole
American Goldfinch (several)
also my first Zebra Swallowtails

:Swan Harbor Farm:
1 Pied-billed Grebe (calling)
1 Great Blue Heron
4 Blue-winged Teal
2 Bald Eagle
1 Northern Harrier
1 Red-tailed Hawk
1 American Coot
19 Lesser Yellowlegs
40 Least Sandpiper
3 Wilsons Snipe
1 Horned Lark
Tree Swallow (many)
1 Barn Swallow
1 Field Sparrow
4 Savannah Sparrow
2 Song Sparrow
1 Bobolink
10 Red-winged Blackbird
couldn't find the Bittern

Cheers,
Steve Collins
Towson, MD