Bow Valley Statistics

Stats are only available for winter 2019-20 and later

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	2024	2023	2022	2021	2020	2019
Dec 1	14	6	4	4	9	6
Dec 2	3	1	17	20	4	8
Dec 3	8	18	1	9	26	2
Dec 4	7	7	0	2	3	1
Dec 5	2	1	1	0	0	5
Dec 6	2	0	3	0	0	11
Dec 7	0	1	0	2	0	2
Dec 8	1	1	4	0	0	3
Dec 9	1	0	4	0	0	2
Dec 10	2	1	1	5	3	1
Dec 11	2	1	0	0	0	1
Dec 12	0	3	1	2	1	0
Dec 13	0	1	0	0	0	0
Dec 14	12	2	2	2	15	11
Dec 15-Dec 21	1	12	4	9	7	1
Dec 22-Dec 28	6	1	14	1	2	0
Dec 29-Jan 4	0	4	1	3	1	4
Jan 5-Jan 18	4	1	4	3	3	0
Jan 19-Feb 1	2	5	4	1	0	2
Feb 2-Feb 15	1	1	1	3	0	0
Feb 16-Feb 28/9	1	0	1	3	0	0

Cumulative number of species for each time period

Days	2024	2023	2022	2021	2020	2019
Dec 1	14	6	4	4	9	6
Dec 2	17	7	21	24	13	14
Dec 3	25	25	22	33	39	16
Dec 4	32	32	22	35	42	17
Dec 5	34	33	23	35	42	22
Dec 6	36	33	26	35	42	33
Dec 7	36	34	26	37	42	35
Dec 8	37	35	30	37	42	38
Dec 9	38	35	34	37	42	40
Dec 10	40	36	35	42	45	41
Dec 11	42	37	35	42	45	42
Dec 12	42	40	36	44	46	42
Dec 13	42	41	36	44	46	42
Dec 14	54	43	38	46	61	53
Dec 15-Dec 21	55	55	42	55	68	54
Dec 22-Dec 28	61	56	56	56	70	54
Dec 29-Jan 4	61	60	57	59	71	58
Jan 5-Jan 18	65	61	61	62	74	58
Jan 19-Feb 1	67	66	65	63	74	60
Feb 2-Feb 15	68	67	66	66	74	60
Feb 16-Feb 28/9	69	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	6	Dec 2	Feb 2
Trumpeter Swan	5	Dec 2	Dec 4
Tundra Swan	2	Dec 1	Dec 2
American Wigeon	3	Dec 2	Dec 20
Mallard	6	Dec 1	Dec 3
Northern Pintail	1	Dec 24	Dec 24
Green-winged Teal	4	Dec 1	Dec 13
Redhead	1	Dec 27	Dec 27
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	5	Dec 2	Dec 16
Common Goldeneye	6	Dec 2	Dec 3
Barrow's Goldeneye	4	Dec 3	Jan 3
Hooded Merganser	3	Dec 3	Dec 19
Common Merganser	6	Dec 2	Dec 23
Red-breasted Merganser	2	Dec 7	Dec 24
Ruffed Grouse	6	Dec 2	Dec 23
Dusky Grouse	4	Dec 20	Jan 24
White-tailed Ptarmigan	6	Dec 8	Jan 28
Spruce Grouse	6	Dec 3	Dec 31
Rock Pigeon	6	Dec 2	Dec 14
Eurasian Collared-Dove	1	Jan 30	Jan 30
Virginia Rail	2	Dec 10	Jan 24
American Coot	1	Dec 2	Dec 2
Killdeer	3	Dec 6	Jan 3
Wilson's Snipe	5	Dec 5	Jan 7
Horned Grebe	1	Dec 1	Dec 1
Red-necked Grebe	1	Dec 1	Dec 1
Western Grebe	5	Dec 2	Dec 3
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	6	Dec 3	Jan 6
Bald Eagle	6	Dec 3	Jan 2
Rough-legged Hawk	3	Dec 20	Feb 6
Great Horned Owl	6	Dec 9	Jan 23
Northern Hawk Owl	4	Dec 8	Jan 21
Northern Pygmy-Owl	6	Dec 14	Jan 29
Barred Owl	1	Feb 21	Feb 21
Great Grey Owl	3	Dec 8	Jan 16
Boreal Owl	3	Dec 8	Jan 21
Northern Saw-whet Owl	2	Dec 17	Feb 21
Belted Kingfisher	6	Dec 1	Jan 15
American Three-toed Woodpecker	6	Dec 3	Dec 14
Black-backed Woodpecker	5	Dec 8	Jan 9
Downy Woodpecker	6	Dec 3	Dec 10
Hairy Woodpecker	6	Dec 1	Dec 10
Pileated Woodpecker	6	Dec 3	Jan 6
Northern Flicker	6	Dec 2	Dec 10
Merlin	6	Dec 14	Jan 3
Gyrfalcon	1	Dec 31	Dec 31
Northern Shrike	6	Dec 4	Jan 23
Canada Jay	6	Dec 1	Dec 8
Steller's Jay	6	Dec 1	Dec 23
Blue Jay	6	Dec 3	Dec 6
Black-billed Magpie	6	Dec 1	Dec 3
Clark's Nutcracker	6	Dec 1	Dec 6
American Crow	6	Dec 3	Dec 18
Common Raven	6	Dec 1	Dec 2
Black-capped Chickadee	6	Dec 1	Dec 3
Mountain Chickadee	6	Dec 1	Dec 3
Boreal Chickadee	6	Dec 1	Dec 7
Golden-crowned Kinglet	6	Dec 1	Dec 23
White-breasted Nuthatch	6	Dec 1	Dec 6
Red-breasted Nuthatch	6	Dec 1	Dec 3
Brown Creeper	6	Dec 1	Dec 16
American Dipper	6	Dec 2	Dec 16
European Starling	5	Dec 3	Dec 23
Grey Catbird	1	Dec 3	Dec 3
Townsend's Solitaire	6	Dec 1	Dec 16
Varied Thrush	2	Dec 5	Dec 10
Hermit Thrush	1	Dec 14	Dec 14
American Robin	6	Dec 3	Dec 23
Bohemian Waxwing	6	Dec 1	Dec 23
House Sparrow	6	Dec 1	Dec 6
Evening Grosbeak	3	Dec 14	Feb 2
Pine Grosbeak	6	Dec 1	Dec 3
Grey-crowned Rosy-Finch	5	Dec 10	Jan 14
House Finch	2	Jan 28	Feb 21
Redpoll	1	Dec 3	Dec 3
Redpoll (Common)	6	Dec 2	Feb 26
Redpoll (Hoary)	1	Feb 6	Feb 6
Red Crossbill	6	Dec 10	Dec 19
White-winged Crossbill	6	Dec 2	Dec 14
Pine Siskin	6	Dec 4	Dec 19
American Goldfinch	1	Dec 17	Dec 17
Snow Bunting	6	Dec 1	Dec 14
American Tree Sparrow	3	Dec 2	Jan 23
Dark-eyed Junco	6	Dec 2	Dec 16
White-throated Sparrow	5	Dec 3	Dec 27
Song Sparrow	6	Dec 2	Dec 14
Spotted Towhee	1	Feb 28	Feb 28
Red-winged Blackbird	1	Dec 18	Dec 18
Rusty Blackbird	5	Dec 3	Feb 6
Brewer's Blackbird	1	Dec 26	Dec 26
Common Grackle	2	Dec 14	Jan 5
Yellow-rumped Warbler	1	Dec 11	Dec 11