The dates are when the species were added to the database, not when they were first detected or reported
Number of species added to database each time period
Days |
2023 | 2022 | 2021 | 2020 | 2019 |
---|---|---|---|---|---|
Dec 1 | 6 | 4 | 4 | 9 | 6 |
Dec 2 | 1 | 17 | 20 | 4 | 8 |
Dec 3 | 18 | 1 | 9 | 26 | 2 |
Dec 4 | 7 | 0 | 2 | 3 | 1 |
Dec 5 | 1 | 1 | 0 | 0 | 5 |
Dec 6 | 0 | 3 | 0 | 0 | 11 |
Dec 7 | 1 | 0 | 2 | 0 | 2 |
Dec 8 | 1 | 4 | 0 | 0 | 3 |
Dec 9 | 0 | 4 | 0 | 0 | 2 |
Dec 10 | 1 | 1 | 5 | 3 | 1 |
Dec 11 | 1 | 0 | 0 | 0 | 1 |
Dec 12 | 3 | 1 | 2 | 1 | 0 |
Dec 13 | 1 | 0 | 0 | 0 | 0 |
Dec 14 | 2 | 2 | 2 | 15 | 11 |
Dec 15-Dec 21 | 12 | 4 | 9 | 7 | 1 |
Dec 22-Dec 28 | 1 | 14 | 1 | 2 | 0 |
Dec 29-Jan 4 | 4 | 1 | 3 | 1 | 4 |
Jan 5-Jan 18 | 1 | 4 | 3 | 3 | 0 |
Jan 19-Feb 1 | 5 | 4 | 1 | 0 | 2 |
Feb 2-Feb 15 | 1 | 1 | 3 | 0 | 0 |
Feb 16-Feb 28/9 | 0 | 1 | 3 | 0 | 0 |
Cumulative number of species for each time period
Days |
2023 | 2022 | 2021 | 2020 | 2019 |
---|---|---|---|---|---|
Dec 1 | 6 | 4 | 4 | 9 | 6 |
Dec 2 | 7 | 21 | 24 | 13 | 14 |
Dec 3 | 25 | 22 | 33 | 39 | 16 |
Dec 4 | 32 | 22 | 35 | 42 | 17 |
Dec 5 | 33 | 23 | 35 | 42 | 22 |
Dec 6 | 33 | 26 | 35 | 42 | 33 |
Dec 7 | 34 | 26 | 37 | 42 | 35 |
Dec 8 | 35 | 30 | 37 | 42 | 38 |
Dec 9 | 35 | 34 | 37 | 42 | 40 |
Dec 10 | 36 | 35 | 42 | 45 | 41 |
Dec 11 | 37 | 35 | 42 | 45 | 42 |
Dec 12 | 40 | 36 | 44 | 46 | 42 |
Dec 13 | 41 | 36 | 44 | 46 | 42 |
Dec 14 | 43 | 38 | 46 | 61 | 53 |
Dec 15-Dec 21 | 55 | 42 | 55 | 68 | 54 |
Dec 22-Dec 28 | 56 | 56 | 56 | 70 | 54 |
Dec 29-Jan 4 | 60 | 57 | 59 | 71 | 58 |
Jan 5-Jan 18 | 61 | 61 | 62 | 74 | 58 |
Jan 19-Feb 1 | 66 | 65 | 63 | 74 | 60 |
Feb 2-Feb 15 | 67 | 66 | 66 | 74 | 60 |
Feb 16-Feb 28/9 | 67 | 67 | 69 | 74 | 60 |
Earliest and latest first addition of each species since Dec 2019 EOS means species was added after end of season
Species |
Occurrences |
Earliest date |
Latest date |
---|---|---|---|
Canada Goose | 5 | Dec 2 | Feb 2 |
Trumpeter Swan | 4 | Dec 2 | Dec 2 |
Tundra Swan | 2 | Dec 1 | Dec 2 |
American Wigeon | 2 | Dec 2 | Dec 20 |
Mallard | 5 | Dec 1 | Dec 3 |
Green-winged Teal | 3 | Dec 2 | Dec 13 |
Ring-necked Duck | 1 | Dec 1 | Dec 1 |
White-winged Scoter | 1 | Dec 3 | Dec 3 |
Long-tailed Duck | 1 | Dec 2 | Dec 2 |
Bufflehead | 4 | Dec 2 | Dec 16 |
Common Goldeneye | 5 | Dec 2 | Dec 3 |
Barrow's Goldeneye | 4 | Dec 3 | Jan 3 |
Hooded Merganser | 2 | Dec 3 | Dec 9 |
Common Merganser | 5 | Dec 2 | Dec 23 |
Red-breasted Merganser | 2 | Dec 7 | Dec 24 |
Ruffed Grouse | 5 | Dec 2 | Dec 23 |
Dusky Grouse | 3 | Dec 20 | Jan 24 |
White-tailed Ptarmigan | 5 | Dec 8 | Jan 28 |
Spruce Grouse | 5 | Dec 3 | Dec 31 |
Horned Grebe | 1 | Dec 1 | Dec 1 |
Red-necked Grebe | 1 | Dec 1 | Dec 1 |
Western Grebe | 4 | Dec 2 | Dec 3 |
Rock Pigeon | 5 | Dec 2 | Dec 14 |
Virginia Rail | 2 | Dec 10 | Jan 24 |
American Coot | 1 | Dec 2 | Dec 2 |
Killdeer | 2 | Jan 1 | Jan 3 |
Wilson's Snipe | 4 | Dec 5 | Dec 23 |
Pacific Loon | 1 | Dec 2 | Dec 2 |
Common Loon | 1 | Jan 10 | Jan 10 |
Great Blue Heron | 1 | Dec 9 | Dec 9 |
Golden Eagle | 1 | Dec 24 | Dec 24 |
Sharp-shinned Hawk | 1 | Dec 23 | Dec 23 |
American Goshawk | 5 | Dec 3 | Jan 6 |
Bald Eagle | 5 | Dec 3 | Jan 2 |
Rough-legged Hawk | 3 | Dec 20 | Feb 6 |
Great Horned Owl | 5 | Dec 20 | Jan 23 |
Northern Hawk Owl | 3 | Dec 8 | Jan 21 |
Northern Pygmy-Owl | 5 | Dec 14 | Jan 29 |
Barred Owl | 1 | Feb 21 | Feb 21 |
Great Grey Owl | 2 | Dec 8 | Jan 16 |
Boreal Owl | 2 | Dec 8 | Jan 13 |
Northern Saw-whet Owl | 2 | Dec 17 | Feb 21 |
Belted Kingfisher | 5 | Dec 1 | Dec 23 |
American Three-toed Woodpecker | 5 | Dec 3 | Dec 14 |
Black-backed Woodpecker | 5 | Dec 8 | Jan 9 |
Downy Woodpecker | 5 | Dec 3 | Dec 10 |
Hairy Woodpecker | 5 | Dec 2 | Dec 10 |
Pileated Woodpecker | 5 | Dec 4 | Jan 6 |
Northern Flicker | 5 | Dec 2 | Dec 10 |
Merlin | 5 | Dec 14 | Jan 3 |
Gyrfalcon | 1 | Dec 31 | Dec 31 |
Northern Shrike | 5 | Dec 14 | Jan 23 |
Canada Jay | 5 | Dec 2 | Dec 8 |
Steller's Jay | 5 | Dec 1 | Dec 23 |
Blue Jay | 5 | Dec 3 | Dec 6 |
Black-billed Magpie | 5 | Dec 1 | Dec 3 |
Clark's Nutcracker | 5 | Dec 1 | Dec 6 |
American Crow | 5 | Dec 3 | Dec 18 |
Common Raven | 5 | Dec 1 | Dec 2 |
Black-capped Chickadee | 5 | Dec 1 | Dec 3 |
Mountain Chickadee | 5 | Dec 1 | Dec 3 |
Boreal Chickadee | 5 | Dec 1 | Dec 7 |
Golden-crowned Kinglet | 5 | Dec 1 | Dec 23 |
White-breasted Nuthatch | 5 | Dec 2 | Dec 6 |
Red-breasted Nuthatch | 5 | Dec 1 | Dec 3 |
Brown Creeper | 5 | Dec 3 | Dec 16 |
American Dipper | 5 | Dec 2 | Dec 16 |
European Starling | 4 | Dec 3 | Dec 23 |
Grey Catbird | 1 | Dec 3 | Dec 3 |
Townsend's Solitaire | 5 | Dec 1 | Dec 16 |
Varied Thrush | 2 | Dec 5 | Dec 10 |
Hermit Thrush | 1 | Dec 14 | Dec 14 |
American Robin | 5 | Dec 3 | Dec 23 |
Bohemian Waxwing | 5 | Dec 1 | Dec 23 |
House Sparrow | 5 | Dec 1 | Dec 6 |
Evening Grosbeak | 2 | Dec 14 | Feb 2 |
Pine Grosbeak | 5 | Dec 2 | Dec 3 |
Grey-crowned Rosy-Finch | 4 | Dec 19 | Jan 14 |
House Finch | 2 | Jan 28 | Feb 21 |
Common Redpoll | 5 | Dec 2 | Dec 16 |
Hoary Redpoll | 1 | Feb 6 | Feb 6 |
Red Crossbill | 5 | Dec 10 | Dec 19 |
White-winged Crossbill | 5 | Dec 2 | Dec 14 |
Pine Siskin | 5 | Dec 12 | Dec 19 |
American Goldfinch | 1 | Dec 17 | Dec 17 |
Snow Bunting | 5 | Dec 1 | Dec 14 |
American Tree Sparrow | 3 | Dec 2 | Jan 23 |
Dark-eyed Junco | 5 | Dec 2 | Dec 16 |
White-throated Sparrow | 4 | Dec 3 | Dec 20 |
Song Sparrow | 5 | Dec 2 | Dec 14 |
Spotted Towhee | 1 | Feb 28 | Feb 28 |
Red-winged Blackbird | 1 | Dec 18 | Dec 18 |
Rusty Blackbird | 4 | Dec 3 | Feb 6 |
Brewer's Blackbird | 1 | Dec 26 | Dec 26 |
Common Grackle | 1 | Jan 5 | Jan 5 |
Yellow-rumped Warbler | 1 | Dec 11 | Dec 11 |