Calgary 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	66	51	0	29	45	29
Dec 2	5	15	45	13	8	5
Dec 3	1	13	13	12	15	11
Dec 4	7	3	5	20	1	8
Dec 5	0	3	9	1	11	0
Dec 6	1	1	2	0	0	1
Dec 7	6	0	0	0	0	1
Dec 8	3	1	3	4	3	2
Dec 9	4	2	1	2	0	2
Dec 10	0	3	3	1	2	3
Dec 11	0	2	1	0	1	0
Dec 12	0	0	3	2	2	0
Dec 13	2	1	0	3	0	0
Dec 14	0	0	0	1	1	14
Dec 15-Dec 21	6	8	5	4	10	14
Dec 22-Dec 28	3	3	3	7	3	2
Dec 29-Jan 4	2	9	3	1	9	7
Jan 5-Jan 18	5	1	8	11	2	5
Jan 19-Feb 1	0	2	5	2	3	1
Feb 2-Feb 15	0	3	1	0	2	1
Feb 16-Feb 28/9	0	0	0	5	1	3

Cumulative number of species for each time period

Days	2024	2023	2022	2021	2020	2019
Dec 1	66	51	0	29	45	29
Dec 2	71	66	45	42	53	34
Dec 3	72	79	58	54	68	45
Dec 4	79	82	63	74	69	53
Dec 5	79	85	72	75	80	53
Dec 6	80	86	74	75	80	54
Dec 7	86	86	74	75	80	55
Dec 8	89	87	77	79	83	57
Dec 9	93	89	78	81	83	59
Dec 10	93	92	81	82	85	62
Dec 11	93	94	82	82	86	62
Dec 12	93	94	85	84	88	62
Dec 13	95	95	85	87	88	62
Dec 14	95	95	85	88	89	76
Dec 15-Dec 21	101	103	90	92	99	90
Dec 22-Dec 28	104	106	93	99	102	92
Dec 29-Jan 4	106	115	96	100	111	99
Jan 5-Jan 18	111	116	104	111	113	104
Jan 19-Feb 1	111	118	109	113	116	105
Feb 2-Feb 15	111	121	110	113	118	106
Feb 16-Feb 28/9	111	121	110	118	119	109

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
Snow Goose	4	Dec 3	Jan 28
Greater White-fronted Goose	3	Dec 2	Dec 21
Cackling Goose	6	Dec 1	Dec 8
Canada Goose	6	Dec 1	Dec 2
Trumpeter Swan	6	Dec 1	Dec 2
Tundra Swan	6	Dec 1	Dec 9
Wood Duck	6	Dec 3	Dec 29
Blue-winged Teal	1	Dec 3	Dec 3
Northern Shoveler	4	Dec 7	Feb 11
Gadwall	6	Dec 1	Dec 23
American Wigeon	6	Dec 1	Dec 21
Mallard	6	Dec 1	Dec 2
Northern Pintail	6	Dec 3	Dec 22
Green-winged Teal	6	Dec 1	Feb 23
Canvasback	5	Dec 1	Dec 4
Redhead	6	Dec 1	Dec 3
Ring-necked Duck	6	Dec 1	Dec 3
Greater Scaup	6	Dec 3	Feb 19
Lesser Scaup	6	Dec 1	Dec 4
Harlequin Duck	6	Dec 1	Dec 8
White-winged Scoter	1	Dec 4	Dec 4
Long-tailed Duck	2	Dec 1	Dec 4
Bufflehead	6	Dec 1	Dec 2
Common Goldeneye	6	Dec 1	Dec 2
Barrow's Goldeneye	6	Dec 1	Dec 3
Hooded Merganser	6	Dec 1	Dec 3
Common Merganser	6	Dec 1	Dec 3
Red-breasted Merganser	4	Dec 1	Jan 27
Ruddy Duck	4	Dec 1	Jan 24
Wild Turkey	6	Dec 1	Jan 11
Ruffed Grouse	6	Dec 1	Dec 4
Sharp-tailed Grouse	6	Dec 1	Dec 29
White-tailed Ptarmigan	1	Dec 30	Dec 30
Spruce Grouse	6	Dec 5	Feb 20
Grey Partridge	6	Dec 1	Dec 10
Ring-necked Pheasant	6	Dec 1	Dec 14
Rock Pigeon	6	Dec 1	Dec 2
Eurasian Collared-Dove	6	Dec 1	Dec 5
White-winged Dove	1	Jan 11	Jan 11
Mourning Dove	2	Dec 10	Dec 16
Anna's Hummingbird	1	Dec 2	Dec 2
American Coot	4	Dec 1	Dec 3
Killdeer	6	Dec 1	Dec 12
Wilson's Snipe	6	Dec 3	Jan 2
Ring-billed Gull	2	Dec 2	Dec 8
California Gull	2	Dec 31	EOS
Pied-billed Grebe	1	Dec 1	Dec 1
Horned Grebe	1	Dec 4	Dec 4
Red-necked Grebe	1	Dec 5	Dec 5
Eared Grebe	1	Dec 7	Dec 7
Western Grebe	1	Dec 9	Dec 9
Double-crested Cormorant	1	Dec 2	Dec 2
Great Blue Heron	2	Dec 13	Jan 11
American White Pelican	3	Dec 1	Dec 8
Golden Eagle	6	Dec 1	Dec 14
Sharp-shinned Hawk	6	Dec 1	Dec 23
Cooper's Hawk	6	Dec 2	Jan 14
American Goshawk	6	Dec 1	Dec 14
Northern Harrier	6	Dec 3	Jan 14
Bald Eagle	6	Dec 1	Dec 2
Red-tailed Hawk	6	Dec 3	Dec 14
Rough-legged Hawk	6	Dec 1	Dec 14
American Barn Owl	1	Jan 14	Jan 14
Snowy Owl	6	Dec 1	Dec 14
Great Horned Owl	6	Dec 1	Dec 15
Northern Hawk Owl	6	Dec 10	Jan 14
Northern Pygmy-Owl	6	Dec 2	Jan 14
Barred Owl	5	Dec 18	Feb 20
Great Grey Owl	6	Dec 1	Jan 14
Long-eared Owl	3	Dec 1	Jan 1
Short-eared Owl	6	Dec 1	Jan 2
Boreal Owl	3	Dec 7	Dec 29
Northern Saw-whet Owl	6	Dec 1	Dec 10
Belted Kingfisher	6	Dec 1	Dec 5
Yellow-bellied Sapsucker	1	Jan 28	Jan 28
Red-bellied Woodpecker	1	Jan 19	Jan 19
American Three-toed Woodpecker	6	Dec 1	Dec 14
Black-backed Woodpecker	6	Dec 1	Jan 6
Downy Woodpecker	6	Dec 1	Dec 2
Hairy Woodpecker	6	Dec 1	Dec 2
Pileated Woodpecker	6	Dec 1	Dec 4
Northern Flicker	6	Dec 1	Dec 2
American Kestrel	7	Dec 2	EOS
Merlin	6	Dec 1	Dec 12
Gyrfalcon	6	Dec 3	Dec 30
Prairie Falcon	6	Dec 1	Dec 5
Northern Shrike	6	Dec 1	Dec 2
Canada Jay	6	Dec 1	Dec 4
Steller's Jay	5	Dec 4	Jan 10
Blue Jay	6	Dec 1	Dec 2
Black-billed Magpie	6	Dec 1	Dec 14
Clark's Nutcracker	6	Dec 7	Jan 23
American Crow	6	Dec 1	Dec 4
Common Raven	6	Dec 1	Dec 2
Black-capped Chickadee	6	Dec 1	Dec 2
Mountain Chickadee	6	Dec 1	Dec 4
Boreal Chickadee	6	Dec 1	Dec 4
Horned Lark	6	Dec 1	Dec 24
Ruby-crowned Kinglet	1	Dec 19	Dec 19
Golden-crowned Kinglet	6	Dec 1	Dec 15
White-breasted Nuthatch	6	Dec 1	Dec 2
Red-breasted Nuthatch	6	Dec 1	Dec 2
Brown Creeper	6	Dec 1	Dec 5
Winter Wren	1	Dec 3	Dec 3
Pacific/Winter Wren	2	Jan 13	Jan 26
American Dipper	6	Dec 1	Dec 8
European Starling	6	Dec 1	Dec 3
Grey Catbird	2	Dec 2	Dec 19
Northern Mockingbird	1	Feb 8	Feb 8
Mountain Bluebird	1	Dec 19	Dec 19
Townsend's Solitaire	6	Dec 1	Dec 2
Varied Thrush	5	Dec 3	Dec 19
Swainson's Thrush	1	Dec 20	Dec 20
American Robin	6	Dec 1	Dec 16
Bohemian Waxwing	6	Dec 1	Dec 2
Cedar Waxwing	6	Dec 4	Dec 28
House Sparrow	6	Dec 1	Dec 2
American Pipit	1	Feb 9	Feb 9
Evening Grosbeak	6	Dec 1	Dec 5
Pine Grosbeak	6	Dec 1	Dec 4
Grey-crowned Rosy-Finch	4	Dec 6	Feb 7
House Finch	6	Dec 1	Dec 2
Purple Finch	5	Dec 9	Feb 11
Cassin's Finch	1	Dec 19	Dec 19
Redpoll	1	Dec 1	Dec 1
Redpoll (Common)	5	Dec 1	Dec 15
Redpoll (Hoary)	3	Dec 3	Dec 16
Red Crossbill	6	Dec 1	Jan 16
White-winged Crossbill	6	Dec 1	Dec 18
Pine Siskin	6	Dec 1	Dec 13
American Goldfinch	5	Dec 2	Dec 16
Lapland Longspur	4	Dec 6	Feb 24
Snow Bunting	6	Dec 1	Dec 14
American Tree Sparrow	6	Dec 1	Dec 28
Fox Sparrow	2	Jan 3	Jan 14
Dark-eyed Junco	6	Dec 1	Dec 5
White-crowned Sparrow	2	Dec 5	Jan 14
Harris's Sparrow	4	Jan 14	EOS
White-throated Sparrow	6	Dec 2	Dec 23
Savannah Sparrow	1	Jan 21	Jan 21
Song Sparrow	6	Dec 1	Feb 7
Swamp Sparrow	1	Dec 15	Dec 15
Spotted Towhee	1	Feb 20	Feb 20
Yellow-headed Blackbird	1	Dec 21	Dec 21
Western Meadowlark	4	Dec 8	Dec 25
Red-winged Blackbird	5	Dec 3	EOS
Rusty Blackbird	5	Dec 3	Jan 4
Brewer's Blackbird	3	Dec 1	Jan 4
Common Grackle	6	Dec 5	Dec 31
Cape May Warbler	1	Jan 27	Jan 27
Palm Warbler	1	Jan 1	Jan 1
Yellow-rumped Warbler	5	Dec 9	Jan 12