First Date Species Was Reported in Illinois (2020)
| YR# | SPECIES | DATE |
|---|---|---|
| 1 | American Black Duck | 1/1/2020 |
| 2 | American Coot | 1/1/2020 |
| 3 | American Crow | 1/1/2020 |
| 4 | American Goldfinch | 1/1/2020 |
| 5 | American Kestrel | 1/1/2020 |
| 6 | American Pipit | 1/1/2020 |
| 7 | American Robin | 1/1/2020 |
| 8 | American Tree Sparrow | 1/1/2020 |
| 9 | American White Pelican | 1/1/2020 |
| 10 | American Wigeon | 1/1/2020 |
| 11 | Bald Eagle | 1/1/2020 |
| 12 | Barred Owl | 1/1/2020 |
| 13 | Belted Kingfisher | 1/1/2020 |
| 14 | Black Vulture | 1/1/2020 |
| 15 | Black-capped Chickadee | 1/1/2020 |
| 16 | Black-crowned Night-Heron | 1/1/2020 |
| 17 | Blue Jay | 1/1/2020 |
| 18 | Blue-winged Teal | 1/1/2020 |
| 19 | Bonaparte's Gull | 1/1/2020 |
| 20 | Brown Creeper | 1/1/2020 |
| 21 | Brown Thrasher | 1/1/2020 |
| 22 | Brown-headed Cowbird | 1/1/2020 |
| 23 | Bufflehead | 1/1/2020 |
| 24 | Cackling Goose | 1/1/2020 |
| 25 | Canada Goose | 1/1/2020 |
| 26 | Canvasback | 1/1/2020 |
| 27 | Carolina Chickadee | 1/1/2020 |
| 28 | Carolina Wren | 1/1/2020 |
| 29 | Cedar Waxwing | 1/1/2020 |
| 30 | Chipping Sparrow | 1/1/2020 |
| 31 | Clay-colored Sparrow | 1/1/2020 |
| 32 | Common Goldeneye | 1/1/2020 |
| 33 | Common Grackle | 1/1/2020 |
| 34 | Common Loon | 1/1/2020 |
| 35 | Common Merganser | 1/1/2020 |
| 36 | Cooper's Hawk | 1/1/2020 |
| 37 | Dark-eyed Junco | 1/1/2020 |
| 38 | Double-crested Cormorant | 1/1/2020 |
| 39 | Downy Woodpecker | 1/1/2020 |
| 40 | Eastern Bluebird | 1/1/2020 |
| 41 | Eastern Meadowlark | 1/1/2020 |
| 42 | Eastern Phoebe | 1/1/2020 |
| 43 | Eastern Screech-Owl | 1/1/2020 |
| 44 | Eastern Towhee | 1/1/2020 |
| 45 | Eurasian Collared-Dove | 1/1/2020 |
| 46 | Eurasian Tree Sparrow | 1/1/2020 |
| 47 | European Goldfinch | 1/1/2020 |
| 48 | European Starling | 1/1/2020 |
| 49 | Field Sparrow | 1/1/2020 |
| 50 | Fish Crow | 1/1/2020 |
| 51 | Fox Sparrow | 1/1/2020 |
| 52 | Gadwall | 1/1/2020 |
| 53 | Glaucous Gull | 1/1/2020 |
| 54 | Golden-crowned Kinglet | 1/1/2020 |
| 55 | Great Black-backed Gull | 1/1/2020 |
| 56 | Great Blue Heron | 1/1/2020 |
| 57 | Great Egret | 1/1/2020 |
| 58 | Great Horned Owl | 1/1/2020 |
| 59 | Greater Scaup | 1/1/2020 |
| 60 | Greater White-fronted Goose | 1/1/2020 |
| 61 | Green-winged Teal | 1/1/2020 |
| 62 | Hairy Woodpecker | 1/1/2020 |
| 63 | Harlequin Duck | 1/1/2020 |
| 64 | Harris's Sparrow | 1/1/2020 |
| 65 | Hermit Thrush | 1/1/2020 |
| 66 | Herring Gull | 1/1/2020 |
| 67 | Hooded Merganser | 1/1/2020 |
| 68 | Horned Grebe | 1/1/2020 |
| 69 | Horned Lark | 1/1/2020 |
| 70 | House Finch | 1/1/2020 |
| 71 | House Sparrow | 1/1/2020 |
| 72 | Iceland Gull | 1/1/2020 |
| 73 | Killdeer | 1/1/2020 |
| 74 | Lapland Longspur | 1/1/2020 |
| 75 | Lesser Black-backed Gull | 1/1/2020 |
| 76 | Lesser Scaup | 1/1/2020 |
| 77 | Long-eared Owl | 1/1/2020 |
| 78 | Mallard | 1/1/2020 |
| 79 | Merlin | 1/1/2020 |
| 80 | Monk Parakeet | 1/1/2020 |
| 81 | Mourning Dove | 1/1/2020 |
| 82 | Mute Swan | 1/1/2020 |
| 83 | Northern Bobwhite | 1/1/2020 |
| 84 | Northern Cardinal | 1/1/2020 |
| 85 | Northern Flicker | 1/1/2020 |
| 86 | Northern Harrier | 1/1/2020 |
| 87 | Northern Mockingbird | 1/1/2020 |
| 88 | Northern Pintail | 1/1/2020 |
| 89 | Northern Saw-whet Owl | 1/1/2020 |
| 90 | Northern Shoveler | 1/1/2020 |
| 91 | Northern Shrike | 1/1/2020 |
| 92 | Orange-crowned Warbler | 1/1/2020 |
| 93 | Peregrine Falcon | 1/1/2020 |
| 94 | Pied-billed Grebe | 1/1/2020 |
| 95 | Pileated Woodpecker | 1/1/2020 |
| 96 | Pine Siskin | 1/1/2020 |
| 97 | Pine Warbler | 1/1/2020 |
| 98 | Purple Finch | 1/1/2020 |
| 99 | Red-bellied Woodpecker | 1/1/2020 |
| 100 | Red-breasted Merganser | 1/1/2020 |
| 101 | Red-breasted Nuthatch | 1/1/2020 |
| 102 | Redhead | 1/1/2020 |
| 103 | Red-headed Woodpecker | 1/1/2020 |
| 104 | Red-shouldered Hawk | 1/1/2020 |
| 105 | Red-tailed Hawk | 1/1/2020 |
| 106 | Red-throated Loon | 1/1/2020 |
| 107 | Red-winged Blackbird | 1/1/2020 |
| 108 | Ring-billed Gull | 1/1/2020 |
| 109 | Ring-necked Duck | 1/1/2020 |
| 110 | Ring-necked Pheasant | 1/1/2020 |
| 111 | Rock Pigeon | 1/1/2020 |
| 112 | Ross's Goose | 1/1/2020 |
| 113 | Rough-legged Hawk | 1/1/2020 |
| 114 | Ruby-crowned Kinglet | 1/1/2020 |
| 115 | Ruddy Duck | 1/1/2020 |
| 116 | Rusty Blackbird | 1/1/2020 |
| 117 | Sandhill Crane | 1/1/2020 |
| 118 | Savannah Sparrow | 1/1/2020 |
| 119 | Sharp-shinned Hawk | 1/1/2020 |
| 120 | Short-eared Owl | 1/1/2020 |
| 121 | Snow Bunting | 1/1/2020 |
| 122 | Snow Goose | 1/1/2020 |
| 123 | Snowy Owl | 1/1/2020 |
| 124 | Song Sparrow | 1/1/2020 |
| 125 | Swamp Sparrow | 1/1/2020 |
| 126 | Trumpeter Swan | 1/1/2020 |
| 127 | Tufted Titmouse | 1/1/2020 |
| 128 | Tundra Swan | 1/1/2020 |
| 129 | Turkey Vulture | 1/1/2020 |
| 130 | Virginia Rail | 1/1/2020 |
| 131 | White-breasted Nuthatch | 1/1/2020 |
| 132 | White-crowned Sparrow | 1/1/2020 |
| 133 | White-throated Sparrow | 1/1/2020 |
| 134 | White-winged Scoter | 1/1/2020 |
| 135 | Whooping Crane | 1/1/2020 |
| 136 | Wild Turkey | 1/1/2020 |
| 137 | Winter Wren | 1/1/2020 |
| 138 | Wood Duck | 1/1/2020 |
| 139 | Yellow-bellied Sapsucker | 1/1/2020 |
| 140 | Yellow-rumped Warbler | 1/1/2020 |
| 141 | Golden Eagle | 1/2/2020 |
| 142 | Greater Prairie-Chicken | 1/2/2020 |
| 143 | Surf Scoter | 1/2/2020 |
| 144 | Gray Catbird | 1/3/2020 |
| 145 | LeConte's Sparrow | 1/3/2020 |
| 146 | Loggerhead Shrike | 1/3/2020 |
| 147 | Long-tailed Duck | 1/3/2020 |
| 148 | Prairie Falcon | 1/3/2020 |
| 149 | Barn Owl | 1/4/2020 |
| 150 | Lincoln's Sparrow | 1/4/2020 |
| 151 | Ovenbird | 1/4/2020 |
| 152 | Black Scoter | 1/5/2020 |
| 153 | Laughing Gull | 1/5/2020 |
| 154 | Indigo Bunting | 1/10/2020 |
| 155 | Brewer's Blackbird | 1/12/2020 |
| 156 | Marsh Wren | 1/13/2020 |
| 157 | Sedge Wren | 1/15/2020 |
| 158 | Dickcissel | 1/16/2020 |
| 159 | Forster's Tern | 1/18/2020 |
| 160 | African Collared-Dove | 1/21/2020 |
| 161 | Common Redpoll | 1/21/2020 |
| 162 | Common Yellowthroat | 1/24/2020 |
| 163 | Townsend's Solitaire | 1/24/2020 |
| 164 | Wilson's Snipe | 1/24/2020 |
| 165 | California Gull | 1/25/2020 |
| 166 | Northern Goshawk | 2/1/2020 |
| 167 | American Woodcock | 2/2/2020 |
| 168 | Western Meadowlark | 2/10/2020 |
| 169 | Palm Warbler | 2/12/2020 |
| 170 | Vesper Sparrow | 2/17/2020 |
| 171 | Spotted Sandpiper | 2/18/2020 |
| 172 | Osprey | 2/29/2020 |
| 173 | Lazuli Bunting | 3/1/2020 |
| 174 | Tree Swallow | 3/2/2020 |
| 175 | Lesser Yellowlegs | 3/5/2020 |
| 176 | Pectoral Sandpiper | 3/7/2020 |
| 177 | Greater Yellowlegs | 3/10/2020 |
| 178 | Caspian Tern | 3/12/2020 |
| 179 | Barn Swallow | 3/15/2020 |
| 180 | Purple Martin | 3/15/2020 |
| 181 | House Wren | 3/16/2020 |
| 182 | Louisiana Waterthrush | 3/19/2020 |
| 183 | American Golden-Plover | 3/21/2020 |
| 184 | Eared Grebe | 3/21/2020 |
| 185 | Northern Rough-winged Swallow | 3/26/2020 |
| 186 | Yellow-crowned Night-Heron | 3/26/2020 |
| 187 | American Bittern | 3/27/2020 |
| 188 | Blue-gray Gnatcatcher | 3/27/2020 |
| 189 | Black-and-white Warbler | 3/28/2020 |
| 190 | Black-necked Stilt | 3/28/2020 |
| 191 | Chimney Swift | 3/28/2020 |
| 192 | Northern Parula | 3/28/2020 |
| 193 | Smith's Longspur | 3/28/2020 |
| 194 | Yellow-headed Blackbird | 3/28/2020 |
| 195 | Yellow-throated Warbler | 3/28/2020 |
| 196 | Cliff Swallow | 3/29/2020 |