Administrator - Record Early/Late Dates

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407 species
Record Early Date
Record Late Date
Black-bellied Whistling-Duck
Essex:
PPNP:
Fulvous Whistling-Duck
Essex:
PPNP:
Snow Goose
Essex:
PPNP:
Ross's Goose
Essex:
PPNP:
Greater White-fronted Goose
Essex:
PPNP:
Brant
Essex:
PPNP:
Cackling Goose
Essex:
PPNP:
Canada Goose
Essex:
PPNP:
Mute Swan
Essex:
PPNP:
Trumpeter Swan
Essex:
PPNP:
Tundra Swan
Essex:
PPNP:
Egyptian Goose
Essex:
PPNP:
Wood Duck
Essex:
PPNP:
Garganey
Essex:
PPNP:
Blue-winged Teal
Essex:
PPNP:
Cinnamon Teal
Essex:
PPNP:
Northern Shoveler
Essex:
PPNP:
Gadwall
Essex:
PPNP:
Eurasian Wigeon
Essex:
PPNP:
American Wigeon
Essex:
PPNP:
Mallard
Essex:
PPNP:
American Black Duck
Essex:
PPNP:
Mottled Duck
Essex:
PPNP:
Northern Pintail
Essex:
PPNP:
Green-winged Teal
Essex:
PPNP:
Canvasback
Essex:
PPNP:
Redhead
Essex:
PPNP:
Ring-necked Duck
Essex:
PPNP:
Tufted Duck
Essex:
PPNP:
Greater Scaup
Essex:
PPNP:
Lesser Scaup
Essex:
PPNP:
King Eider
Essex:
PPNP:
Common Eider
Essex:
PPNP:
Harlequin Duck
Essex:
PPNP:
Surf Scoter
Essex:
PPNP:
White-winged Scoter
Essex:
PPNP:
Black Scoter
Essex:
PPNP:
Long-tailed Duck
Essex:
PPNP:
Bufflehead
Essex:
PPNP:
Common Goldeneye
Essex:
PPNP:
Barrow's Goldeneye
Essex:
PPNP:
Hooded Merganser
Essex:
PPNP:
Common Merganser
Essex:
PPNP:
Red-breasted Merganser
Essex:
PPNP:
Ruddy Duck
Essex:
PPNP:
Northern Bobwhite
Essex:
PPNP:
Wild Turkey
Essex:
PPNP:
Ruffed Grouse
Essex:
PPNP:
Greater Prairie-Chicken
Essex:
PPNP:
Willow Ptarmigan
Essex:
PPNP:
Ring-necked Pheasant
Essex:
PPNP:
Rock Pigeon
Essex:
PPNP:
Passenger Pigeon
Essex:
PPNP:
Eurasian Collared-Dove
Essex:
PPNP:
White-winged Dove
Essex:
PPNP:
Mourning Dove
Essex:
PPNP:
Yellow-billed Cuckoo
Essex:
PPNP:
Black-billed Cuckoo
Essex:
PPNP:
Lesser Nighthawk
Essex:
PPNP:
Common Nighthawk
Essex:
PPNP:
Chuck-will's-widow
Essex:
PPNP:
Eastern Whip-poor-will
Essex:
PPNP:
Black Swift
Essex:
PPNP:
Chimney Swift
Essex:
PPNP:
Ruby-throated Hummingbird
Essex:
PPNP:
Anna's Hummingbird
Essex:
PPNP:
Rufous Hummingbird
Essex:
PPNP:
King Rail
Essex:
PPNP:
Virginia Rail
Essex:
PPNP:
Sora
Essex:
PPNP:
Common Gallinule
Essex:
PPNP:
American Coot
Essex:
PPNP:
Purple Gallinule
Essex:
PPNP:
Yellow Rail
Essex:
PPNP:
Sandhill Crane
Essex:
PPNP:
Black-necked Stilt
Essex:
PPNP:
American Avocet
Essex:
PPNP:
Black-bellied Plover
Essex:
PPNP:
American Golden-Plover
Essex:
PPNP:
Killdeer
Essex:
PPNP:
Semipalmated Plover
Essex:
PPNP:
Piping Plover
Essex:
PPNP:
Snowy Plover
Essex:
PPNP:
Upland Sandpiper
Essex:
PPNP:
Whimbrel
Essex:
PPNP:
Hudsonian Godwit
Essex:
PPNP:
Marbled Godwit
Essex:
PPNP:
Short-billed Dowitcher
Essex:
PPNP:
Long-billed Dowitcher
Essex:
PPNP:
American Woodcock
Essex:
PPNP:
Wilson's Snipe
Essex:
PPNP:
Wilson's Phalarope
Essex:
PPNP:
Red Phalarope
Essex:
PPNP:
Red-necked Phalarope
Essex:
PPNP:
Spotted Sandpiper
Essex:
PPNP:
Solitary Sandpiper
Essex:
PPNP:
Lesser Yellowlegs
Essex:
PPNP:
Willet
Essex:
PPNP:
Greater Yellowlegs
Essex:
PPNP:
Ruddy Turnstone
Essex:
PPNP:
Red Knot
Essex:
PPNP:
Ruff
Essex:
PPNP:
Sharp-tailed Sandpiper
Essex:
PPNP:
Curlew Sandpiper
Essex:
PPNP:
Stilt Sandpiper
Essex:
PPNP:
Buff-breasted Sandpiper
Essex:
PPNP:
Sanderling
Essex:
PPNP:
Dunlin
Essex:
PPNP:
Purple Sandpiper
Essex:
PPNP:
Baird's Sandpiper
Essex:
PPNP:
White-rumped Sandpiper
Essex:
PPNP:
Least Sandpiper
Essex:
PPNP:
Pectoral Sandpiper
Essex:
PPNP:
Western Sandpiper
Essex:
PPNP:
Semipalmated Sandpiper
Essex:
PPNP:
Long-tailed Jaeger
Essex:
PPNP:
Parasitic Jaeger
Essex:
PPNP:
Pomarine Jaeger
Essex:
PPNP:
Thick-billed Murre
Essex:
PPNP:
Ancient Murrelet
Essex:
PPNP:
Little Gull
Essex:
PPNP:
Ross's Gull
Essex:
PPNP:
Black-legged Kittiwake
Essex:
PPNP:
Ivory Gull
Essex:
PPNP:
Sabine's Gull
Essex:
PPNP:
Bonaparte's Gull
Essex:
PPNP:
Black-headed Gull
Essex:
PPNP:
Laughing Gull
Essex:
PPNP:
Franklin's Gull
Essex:
PPNP:
Short-billed Gull
Essex:
PPNP:
Ring-billed Gull
Essex:
PPNP:
American Herring Gull
Essex:
PPNP:
Great Black-backed Gull
Essex:
PPNP:
Glaucous Gull
Essex:
PPNP:
Lesser Black-backed Gull
Essex:
PPNP:
California Gull
Essex:
PPNP:
Slaty-backed Gull
Essex:
PPNP:
Iceland Gull
Essex:
PPNP:
Black Skimmer
Essex:
PPNP:
Sooty Tern
Essex:
PPNP:
Least Tern
Essex:
PPNP:
Caspian Tern
Essex:
PPNP:
Black Tern
Essex:
PPNP:
White-winged Tern
Essex:
PPNP:
Forster's Tern
Essex:
PPNP:
Arctic Tern
Essex:
PPNP:
Common Tern
Essex:
PPNP:
Royal Tern
Essex:
PPNP:
Pied-billed Grebe
Essex:
PPNP:
Horned Grebe
Essex:
PPNP:
Red-necked Grebe
Essex:
PPNP:
Eared Grebe
Essex:
PPNP:
Western Grebe
Essex:
PPNP:
Red-throated Loon
Essex:
PPNP:
Pacific Loon
Essex:
PPNP:
Common Loon
Essex:
PPNP:
Black-capped Petrel
Essex:
PPNP:
Wood Stork
Essex:
PPNP:
Magnificent Frigatebird
Essex:
PPNP:
Northern Gannet
Essex:
PPNP:
Anhinga
Essex:
PPNP:
Double-crested Cormorant
Essex:
PPNP:
Neotropic Cormorant
Essex:
PPNP:
White Ibis
Essex:
PPNP:
Glossy Ibis
Essex:
PPNP:
White-faced Ibis
Essex:
PPNP:
American Bittern
Essex:
PPNP:
Least Bittern
Essex:
PPNP:
Yellow-crowned Night Heron
Essex:
PPNP:
Black-crowned Night Heron
Essex:
PPNP:
Little Blue Heron
Essex:
PPNP:
Tricolored Heron
Essex:
PPNP:
Snowy Egret
Essex:
PPNP:
Green Heron
Essex:
PPNP:
Western Cattle-Egret
Essex:
PPNP:
Great Egret
Essex:
PPNP:
Great Blue Heron
Essex:
PPNP:
American White Pelican
Essex:
PPNP:
Brown Pelican
Essex:
PPNP:
Black Vulture
Essex:
PPNP:
Turkey Vulture
Essex:
PPNP:
Osprey
Essex:
PPNP:
Swallow-tailed Kite
Essex:
PPNP:
Golden Eagle
Essex:
PPNP:
Sharp-shinned Hawk
Essex:
PPNP:
Cooper's Hawk
Essex:
PPNP:
American Goshawk
Essex:
PPNP:
Northern Harrier
Essex:
PPNP:
Bald Eagle
Essex:
PPNP:
Mississippi Kite
Essex:
PPNP:
Broad-winged Hawk
Essex:
PPNP:
Red-shouldered Hawk
Essex:
PPNP:
Swainson's Hawk
Essex:
PPNP:
Red-tailed Hawk
Essex:
PPNP:
Rough-legged Hawk
Essex:
PPNP:
Ferruginous Hawk
Essex:
PPNP:
Eastern Screech-Owl
Essex:
PPNP:
Snowy Owl
Essex:
PPNP:
Great Horned Owl
Essex:
PPNP:
Burrowing Owl
Essex:
PPNP:
Barred Owl
Essex:
PPNP:
Long-eared Owl
Essex:
PPNP:
Short-eared Owl
Essex:
PPNP:
Boreal Owl
Essex:
PPNP:
Northern Saw-whet Owl
Essex:
PPNP:
Belted Kingfisher
Essex:
PPNP:
Yellow-bellied Sapsucker
Essex:
PPNP:
Lewis's Woodpecker
Essex:
PPNP:
Red-headed Woodpecker
Essex:
PPNP:
Red-bellied Woodpecker
Essex:
PPNP:
American Three-toed Woodpecker
Essex:
PPNP:
Black-backed Woodpecker
Essex:
PPNP:
Downy Woodpecker
Essex:
PPNP:
Hairy Woodpecker
Essex:
PPNP:
Pileated Woodpecker
Essex:
PPNP:
Northern Flicker
Essex:
PPNP:
Crested Caracara
Essex:
PPNP:
American Kestrel
Essex:
PPNP:
Merlin
Essex:
PPNP:
Peregrine Falcon
Essex:
PPNP:
Olive-sided Flycatcher
Essex:
PPNP:
Eastern Wood-Pewee
Essex:
PPNP:
Yellow-bellied Flycatcher
Essex:
PPNP:
Acadian Flycatcher
Essex:
PPNP:
Alder Flycatcher
Essex:
PPNP:
Willow Flycatcher
Essex:
PPNP:
Least Flycatcher
Essex:
PPNP:
Gray Flycatcher
Essex:
PPNP:
Eastern Phoebe
Essex:
PPNP:
Say's Phoebe
Essex:
PPNP:
Vermilion Flycatcher
Essex:
PPNP:
Ash-throated Flycatcher
Essex:
PPNP:
Great Crested Flycatcher
Essex:
PPNP:
Tropical Kingbird
Essex:
PPNP:
Cassin's Kingbird
Essex:
PPNP:
Western Kingbird
Essex:
PPNP:
Eastern Kingbird
Essex:
PPNP:
Gray Kingbird
Essex:
PPNP:
Scissor-tailed Flycatcher
Essex:
PPNP:
Fork-tailed Flycatcher
Essex:
PPNP:
White-eyed Vireo
Essex:
PPNP:
Bell's Vireo
Essex:
PPNP:
Yellow-throated Vireo
Essex:
PPNP:
Blue-headed Vireo
Essex:
PPNP:
Plumbeous Vireo
Essex:
PPNP:
Philadelphia Vireo
Essex:
PPNP:
Warbling Vireo
Essex:
PPNP:
Red-eyed Vireo
Essex:
PPNP:
Loggerhead Shrike
Essex:
PPNP:
Northern Shrike
Essex:
PPNP:
Canada Jay
Essex:
PPNP:
Blue Jay
Essex:
PPNP:
Black-billed Magpie
Essex:
PPNP:
Clark's Nutcracker
Essex:
PPNP:
American Crow
Essex:
PPNP:
Fish Crow
Essex:
PPNP:
Common Raven
Essex:
PPNP:
Carolina Chickadee
Essex:
PPNP:
Black-capped Chickadee
Essex:
PPNP:
Boreal Chickadee
Essex:
PPNP:
Tufted Titmouse
Essex:
PPNP:
Horned Lark
Essex:
PPNP:
Bank Swallow
Essex:
PPNP:
Tree Swallow
Essex:
PPNP:
Purple Martin
Essex:
PPNP:
Northern Rough-winged Swallow
Essex:
PPNP:
Barn Swallow
Essex:
PPNP:
Cliff Swallow
Essex:
PPNP:
Cave Swallow
Essex:
PPNP:
Ruby-crowned Kinglet
Essex:
PPNP:
Golden-crowned Kinglet
Essex:
PPNP:
White-breasted Nuthatch
Essex:
PPNP:
Red-breasted Nuthatch
Essex:
PPNP:
Brown Creeper
Essex:
PPNP:
Blue-gray Gnatcatcher
Essex:
PPNP:
Rock Wren
Essex:
PPNP:
Northern House Wren
Essex:
PPNP:
Winter Wren
Essex:
PPNP:
Sedge Wren
Essex:
PPNP:
Marsh Wren
Essex:
PPNP:
Carolina Wren
Essex:
PPNP:
Bewick's Wren
Essex:
PPNP:
European Starling
Essex:
PPNP:
Gray Catbird
Essex:
PPNP:
Brown Thrasher
Essex:
PPNP:
Sage Thrasher
Essex:
PPNP:
Northern Mockingbird
Essex:
PPNP:
Eastern Bluebird
Essex:
PPNP:
Mountain Bluebird
Essex:
PPNP:
Townsend's Solitaire
Essex:
PPNP:
Varied Thrush
Essex:
PPNP:
Veery
Essex:
PPNP:
Gray-cheeked Thrush
Essex:
PPNP:
Swainson's Thrush
Essex:
PPNP:
Hermit Thrush
Essex:
PPNP:
Wood Thrush
Essex:
PPNP:
American Robin
Essex:
PPNP:
Bohemian Waxwing
Essex:
PPNP:
Cedar Waxwing
Essex:
PPNP:
House Sparrow
Essex:
PPNP:
Eurasian Tree Sparrow
Essex:
PPNP:
American Pipit
Essex:
PPNP:
Evening Grosbeak
Essex:
PPNP:
Pine Grosbeak
Essex:
PPNP:
House Finch
Essex:
PPNP:
Purple Finch
Essex:
PPNP:
Cassin's Finch
Essex:
PPNP:
Redpoll
Essex:
PPNP:
Red Crossbill
Essex:
PPNP:
White-winged Crossbill
Essex:
PPNP:
Pine Siskin
Essex:
PPNP:
Lesser Goldfinch
Essex:
PPNP:
American Goldfinch
Essex:
PPNP:
Lapland Longspur
Essex:
PPNP:
Smith's Longspur
Essex:
PPNP:
Snow Bunting
Essex:
PPNP:
Cassin's Sparrow
Essex:
PPNP:
Bachman's Sparrow
Essex:
PPNP:
Grasshopper Sparrow
Essex:
PPNP:
Chipping Sparrow
Essex:
PPNP:
Clay-colored Sparrow
Essex:
PPNP:
Field Sparrow
Essex:
PPNP:
Lark Sparrow
Essex:
PPNP:
Lark Bunting
Essex:
PPNP:
American Tree Sparrow
Essex:
PPNP:
Fox Sparrow
Essex:
PPNP:
Dark-eyed Junco
Essex:
PPNP:
White-crowned Sparrow
Essex:
PPNP:
Harris's Sparrow
Essex:
PPNP:
White-throated Sparrow
Essex:
PPNP:
Vesper Sparrow
Essex:
PPNP:
LeConte's Sparrow
Essex:
PPNP:
Nelson's Sparrow
Essex:
PPNP:
Savannah Sparrow
Essex:
PPNP:
Henslow's Sparrow
Essex:
PPNP:
Song Sparrow
Essex:
PPNP:
Lincoln's Sparrow
Essex:
PPNP:
Swamp Sparrow
Essex:
PPNP:
Green-tailed Towhee
Essex:
PPNP:
Spotted Towhee
Essex:
PPNP:
Eastern Towhee
Essex:
PPNP:
Yellow-breasted Chat
Essex:
PPNP:
Yellow-headed Blackbird
Essex:
PPNP:
Bobolink
Essex:
PPNP:
Western Meadowlark
Essex:
PPNP:
Eastern Meadowlark
Essex:
PPNP:
Orchard Oriole
Essex:
PPNP:
Bullock's Oriole
Essex:
PPNP:
Baltimore Oriole
Essex:
PPNP:
Red-winged Blackbird
Essex:
PPNP:
Brown-headed Cowbird
Essex:
PPNP:
Rusty Blackbird
Essex:
PPNP:
Brewer's Blackbird
Essex:
PPNP:
Common Grackle
Essex:
PPNP:
Ovenbird
Essex:
PPNP:
Worm-eating Warbler
Essex:
PPNP:
Louisiana Waterthrush
Essex:
PPNP:
Northern Waterthrush
Essex:
PPNP:
Golden-winged Warbler
Essex:
PPNP:
Blue-winged Warbler
Essex:
PPNP:
Black-and-white Warbler
Essex:
PPNP:
Prothonotary Warbler
Essex:
PPNP:
Swainson's Warbler
Essex:
PPNP:
Tennessee Warbler
Essex:
PPNP:
Orange-crowned Warbler
Essex:
PPNP:
Nashville Warbler
Essex:
PPNP:
Virginia's Warbler
Essex:
PPNP:
Connecticut Warbler
Essex:
PPNP:
Mourning Warbler
Essex:
PPNP:
Kentucky Warbler
Essex:
PPNP:
Common Yellowthroat
Essex:
PPNP:
Hooded Warbler
Essex:
PPNP:
American Redstart
Essex:
PPNP:
Kirtland's Warbler
Essex:
PPNP:
Cape May Warbler
Essex:
PPNP:
Cerulean Warbler
Essex:
PPNP:
Northern Parula
Essex:
PPNP:
Magnolia Warbler
Essex:
PPNP:
Bay-breasted Warbler
Essex:
PPNP:
Blackburnian Warbler
Essex:
PPNP:
Yellow Warbler
Essex:
PPNP:
Chestnut-sided Warbler
Essex:
PPNP:
Blackpoll Warbler
Essex:
PPNP:
Black-throated Blue Warbler
Essex:
PPNP:
Palm Warbler
Essex:
PPNP:
Pine Warbler
Essex:
PPNP:
Yellow-rumped Warbler
Essex:
PPNP:
Yellow-throated Warbler
Essex:
PPNP:
Prairie Warbler
Essex:
PPNP:
Grace's Warbler
Essex:
PPNP:
Black-throated Gray Warbler
Essex:
PPNP:
Townsend's Warbler
Essex:
PPNP:
Hermit Warbler
Essex:
PPNP:
Black-throated Green Warbler
Essex:
PPNP:
Canada Warbler
Essex:
PPNP:
Wilson's Warbler
Essex:
PPNP:
Summer Tanager
Essex:
PPNP:
Scarlet Tanager
Essex:
PPNP:
Western Tanager
Essex:
PPNP:
Northern Cardinal
Essex:
PPNP:
Rose-breasted Grosbeak
Essex:
PPNP:
Black-headed Grosbeak
Essex:
PPNP:
Blue Grosbeak
Essex:
PPNP:
Lazuli Bunting
Essex:
PPNP:
Indigo Bunting
Essex:
PPNP:
Painted Bunting
Essex:
PPNP:
Dickcissel
Essex:
PPNP:
Prior Changes Listed Below