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Monthly Bird Count Portal

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Species Occurance Heatmaps

This page shows the monthly occurrences of each species in a heatmap. This allows the general trends of each species to be visualized.

Species Occurances By Year

This heatmap shows the number of species observed in each month across all years.

More observations
Fewer observations
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2025
49
50
46
87
75
66
67
67
59
66
2024
46
44
48
77
69
48
53
50
58
2023
51
44
57
65
75
64
52
55
44
2022
51
44
51
78
92
75
70
57
53
53
56
2021
62
56
51
79
83
66
67
69
66
72
59
53
2020
50
47
50
67
97
76
69
68
65
69
44
50
2019
53
45
57
70
80
79
70
56
64
52
59
56
2018
53
48
48
62
75
73
63
61
59
57
45
55
2017
54
52
50
74
87
71
64
68
71
61
51
62
2016
47
45
54
61
70
68
55
64
51
68
51
52
2015
57
53
57
69
77
73
71
66
48
62
62
42
2014
56
54
61
80
82
73
59
52
61
55
59
48
2013
63
57
60
74
74
73
57
56
64
58
56
41
2012
49
59
50
82
86
75
69
64
59
32
60
62
2011
52
47
51
62
90
75
60
54
66
69
50
56
2010
50
42
57
68
88
68
65
61
73
64
49
53
2009
48
46
49
62
83
71
57
68
50
48
60
42
2008
49
45
64
63
85
60
73
65
47
63
44
51
2007
48
45
40
50
88
66
55
61
53
59
49
48
2006
50
52
48
65
83
59
58
61
53
53
46
56
2005
48
51
49
72
78
76
55
70
81
65
67
54
2004
61
51
55
59
76
67
63
69
57
56
2003
64
59
58
73
92
74
60
60
76
66
60
61
2002
59
55
64
84
79
73
55
47
56
61
53
49
2001
58
56
64
66
74
59
66
60
55
57
52
66
2000
55
50
51
71
85
65
59
47
71
65
61
58
1999
51
49
50
76
87
70
65
75
57
60
44
58
1998
42
47
48
54
78
63
54
65
55
65
65
53
1997
31
37
35
66
56
61
63
40
45
48
38
49
1996
51
39
48
55
65
40
62
61
41
61
54
47
1995
37
41
62
50
57
50
51
45
53
52
43
1994
34
34
49
66
62
46
44
46
43
40
58
45
1993
36
39
42
46
60
58
51
47
30
27
36
46
1992
33
30
42
46
49
50
45
36
34
40
40
1991
44
32
36

Species Observation Frequency by Month

This table shows how many years each species has been observed, by month.
The color intensity represents number of months the bird is observed.

A bird observed every April of every year since the count started in 1991 would show as 35.
More observations
Fewer observations
Observed in that month every year
Species Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Glaucous-winged Gull
33
34
34
34
34
31
32
34
30
35
34
33
Mallard
33
34
34
34
34
31
32
34
30
35
34
33
Song Sparrow
33
34
34
34
34
31
32
34
30
35
34
33
Great Blue Heron
33
34
34
34
34
31
32
34
30
35
34
32
Black-capped Chickadee
33
34
33
33
34
31
32
34
30
35
33
33
Canada Goose
33
34
34
34
34
31
32
32
30
33
31
32
Common Merganser
32
34
34
34
34
31
32
31
29
33
33
33
Common Raven
31
31
33
34
32
29
31
33
30
34
34
32
Northern Flicker
30
30
33
35
33
30
31
32
29
35
34
31
Bald Eagle
33
33
32
32
33
30
30
28
21
32
34
33
American Robin
23
31
34
34
34
31
32
33
30
34
32
21
Steller's Jay
33
31
33
32
31
25
23
33
30
35
33
30
Northwestern Crow
30
31
31
31
31
30
31
31
29
31
31
30
European Starling
26
24
32
34
34
32
32
32
28
31
26
24
Belted Kingfisher
25
25
25
26
26
26
30
30
30
34
32
32
Spotted Towhee
29
29
29
28
29
27
28
29
24
29
27
28
Rock Pigeon
26
25
28
30
30
24
28
29
25
25
27
24
Chestnut-backed Chickadee
25
26
28
31
26
22
27
29
22
28
26
24
Red-winged Blackbird
13
31
34
34
34
31
32
34
25
29
8
7
Golden-crowned Kinglet
33
31
29
29
28
11
13
16
20
34
32
33
House Finch
24
27
29
29
30
27
24
29
20
22
23
23
Pine Siskin
27
23
24
30
30
23
21
26
19
26
30
28
Downy Woodpecker
28
26
26
32
21
23
24
23
22
27
23
31
Double-crested Cormorant
33
34
34
31
15
11
15
15
17
31
34
33
Green-winged Teal
22
21
27
34
27
7
7
24
30
34
33
28
American Wigeon
29
30
33
33
25
8
4
5
23
31
32
31
Dark-eyed Junco
32
31
32
32
19
12
5
6
16
33
33
33
White-crowned Sparrow
12
11
13
34
34
31
32
34
29
27
8
11
Winter Wren
22
22
25
24
24
25
24
19
14
24
24
26
Mew Gull
27
29
21
23
23
3
5
16
24
30
31
30
Bufflehead
33
34
34
34
31
5
3
2
1
12
34
33
Northern Pintail
27
32
34
33
16
4
1
8
22
25
21
24
Hairy Woodpecker
23
15
19
23
20
19
18
21
19
24
18
20
Common Goldeneye
33
34
34
33
18
8
3
2
4
2
30
33
House Sparrow
17
18
17
21
25
23
20
20
14
22
15
20
Purple Finch
11
7
14
29
30
24
20
20
18
24
17
14
Hooded Merganser
23
27
29
29
12
3
6
12
9
23
30
24
Pelagic Cormorant
31
31
28
22
5
1
4
5
7
23
32
33
Varied Thrush
29
25
30
31
18
5
3
21
21
21
Savannah Sparrow
3
1
27
33
31
31
23
30
22
1
Red-tailed Hawk
26
23
22
11
5
1
11
10
25
27
29
Ruby-crowned Kinglet
15
15
13
32
24
7
2
2
6
25
20
25
Barrow's Goldeneye
24
28
33
25
13
5
2
28
25
Pileated Woodpecker
15
15
16
26
20
13
11
13
10
15
13
13
Yellow-rumped Warbler
1
4
35
33
22
17
12
30
24
1
1
Common Yellowthroat
10
34
31
32
33
24
8
Gull sp.
26
17
19
9
16
11
11
13
12
15
17
17
Horned Grebe
23
25
24
18
4
1
5
20
25
23
Turkey Vulture
1
1
20
30
26
30
30
21
8
Red-breasted Nuthatch
11
8
11
16
21
16
10
17
18
14
10
11
Rufous Hummingbird
1
33
34
31
31
24
3
3
Band-tailed Pigeon
9
27
29
30
30
21
11
Killdeer
3
3
13
26
31
23
15
15
12
7
6
2
Tree Swallow
5
30
34
31
30
21
2
American Goldfinch
2
2
8
27
28
27
27
19
9
1
2
Violet-green Swallow
5
30
32
31
31
21
1
Barn Swallow
1
5
32
31
32
34
15
Red Crossbill
10
10
10
14
14
8
12
19
15
19
7
9
Cedar Waxwing
1
1
10
31
32
33
22
11
3
2
Common Loon
11
7
6
29
16
16
3
2
3
10
20
18
Red-breasted Sapsucker
7
6
16
22
19
18
11
5
9
11
8
8
Eurasian Collared Dove
13
11
14
13
15
11
9
12
8
10
12
9
Brown Creeper
14
17
13
11
6
6
9
9
7
13
16
14
Brown-headed Cowbird
1
10
34
31
30
18
3
3
1
1
Spotted Sandpiper
1
1
1
28
30
31
31
8
1
Yellow Warbler
6
24
29
30
27
14
2
Peregrine Falcon
4
6
4
9
12
13
22
14
12
17
8
9
Northern Rough-winged Swallow
13
32
28
30
22
4
Swainson's Thrush
4
21
31
32
29
11
1
Osprey
10
25
24
24
21
17
4
1
Cooper's Hawk
13
10
8
7
3
4
7
9
13
18
19
13
Bushtit
12
7
14
14
10
10
10
8
5
9
10
8
Northern Harrier
3
1
4
8
13
3
2
12
20
25
15
7
Fox Sparrow
20
16
11
15
4
2
1
2
11
12
18
Trumpeter Swan
23
14
19
2
4
2
2
1
1
2
18
22
Black-throated Gray Warbler
2
28
25
20
20
12
2
Lesser Scaup
11
12
22
27
13
1
3
7
5
6
Willow Flycatcher
4
30
30
30
12
Sharp-shinned Hawk
10
6
3
4
3
4
1
9
15
22
14
15
Orange-crowned Warbler
16
33
18
13
10
10
3
Merlin
9
4
4
7
9
2
4
11
20
17
6
9
Warbling Vireo
2
22
27
23
20
7
American Dipper
12
13
10
9
2
3
4
15
20
12
Evening Grosbeak
6
4
10
15
21
7
5
8
6
6
5
6
Anna's Hummingbird
10
8
9
9
8
6
5
6
7
10
10
9
Ruffed Grouse
4
6
4
15
13
8
2
3
7
14
8
12
Chickadee sp.
6
8
5
9
8
7
9
7
8
10
10
7
Brewer's Blackbird
7
5
4
12
10
6
6
7
8
14
6
6
Greater Scaup
7
7
18
22
13
9
9
4
Virginia Rail
2
1
4
6
7
9
10
11
11
13
8
7
Marsh Wren
3
1
6
6
9
8
9
10
7
9
5
9
Northern Shrike
12
16
14
3
7
15
15
Red-eyed Vireo
6
26
26
20
1
1
Pied-billed Grebe
13
5
9
15
1
1
3
12
9
11
Golden-crowned Sparrow
9
6
5
8
24
1
3
10
3
9
Pacific-slope Flycatcher
1
21
27
21
7
1
Western Tanager
17
16
18
17
10
Black-headed Grosbeak
1
16
27
21
9
1
2
Pacific Wren
8
6
7
9
8
5
6
4
4
6
7
6
Ring-necked Duck
1
5
8
25
15
1
3
2
5
6
4
Swallow sp.
14
19
14
14
11
3
Meadowlark
6
3
9
5
6
2
4
19
9
7
Western Grebe
6
6
2
3
4
16
22
9
Passerine sp.
7
4
6
2
6
4
7
4
9
6
7
5
American Pipit
8
24
2
2
2
7
15
3
1
Wood Duck
2
1
5
9
9
7
11
3
4
11
1
1
Wilson's Warbler
2
28
17
4
9
3
Hammond's Flycatcher
20
20
16
3
1
Gadwall
4
6
7
10
7
3
1
4
1
5
7
3
American Crow
3
4
6
6
6
3
5
5
3
8
5
3
Northern Shoveler
1
4
19
1
1
2
13
11
3
2
Caspian Tern
17
20
13
3
4
MacGillivray's Warbler
15
16
13
6
5
Red-throated Loon
12
10
9
3
2
1
1
1
5
11
Ring-billed Gull
4
4
1
7
10
2
2
6
6
7
2
4
Surf Scoter
6
13
13
4
9
1
2
4
2
Vaux's Swift
12
17
12
9
4
Goldeneye sp.
8
9
8
10
1
2
7
8
American Coot
3
1
8
1
1
14
13
10
Rufous-sided Towhee
1
2
5
6
5
4
4
4
6
5
5
4
Western x Glaucous-winged Gull
8
8
7
2
6
1
1
1
1
5
7
4
Woodpecker sp.
1
2
4
7
6
3
2
7
5
4
6
3
Townsend's Warbler
1
21
9
6
2
4
2
Duck sp.
5
3
5
2
2
1
4
7
6
5
3
Least Sandpiper
2
10
2
24
4
1
Cassin's Vireo
1
12
14
7
6
2
Kestrel
2
8
10
2
11
3
4
2
Black Swift
2
4
14
11
10
California Gull
2
1
1
5
8
1
1
7
4
7
3
1
Lincoln's Sparrow
1
3
7
1
17
10
1
1
Red-breasted Merganser
7
7
6
3
1
2
1
1
2
4
2
5
Sparrow sp.
1
2
2
3
5
2
7
3
9
4
1
Red-necked Grebe
5
2
5
9
1
4
3
6
3
Thayer's Gull
7
6
3
1
1
1
2
4
7
6
Greater Yellowlegs
12
6
1
8
5
5
Wilson's Snipe
1
3
13
6
1
2
4
6
1
Purple Martin
1
6
8
7
10
3
1
Western Wood-Pewee
6
14
8
4
4
Snow Goose
3
2
1
4
6
1
1
1
5
6
3
Long-billed Dowitcher
1
4
4
4
5
11
2
Greater White-fronted Goose
3
4
2
5
5
1
1
2
1
1
4
Cliff Swallow
1
5
7
5
6
3
Pacific Loon
5
3
2
4
2
1
1
1
4
4
Herring Gull
3
2
1
1
4
1
2
4
2
6
Mountain Bluebird
1
2
18
4
1
Western Sandpiper
7
2
11
6
Flycatcher sp.
5
5
3
8
4
Cinnamon Teal
1
6
12
2
2
1
Sandpiper sp.
4
4
7
5
2
1
Warbler sp.
1
3
7
4
5
3
Eurasian Wigeon
2
2
1
8
2
4
3
Scaup sp.
1
4
3
5
5
3
1
Short-billed Gull
2
3
3
2
4
1
3
2
2
Townsend's Solitaire
13
7
1
1
Eastern Kingbird
1
14
4
2
Hermit Thrush
4
5
6
1
2
2
1
Blue-winged Teal
11
4
1
1
2
Common Snipe
1
1
3
2
2
1
2
4
3
Great Horned Owl
2
1
2
2
3
1
2
1
5
Kinglet sp.
3
2
2
1
3
2
3
3
Canvasback
3
1
1
2
3
1
1
3
3
Harlequin Duck
1
1
6
4
1
1
3
1
Hutton's Vireo
2
3
5
4
1
1
2
Lesser Yellowlegs
4
1
11
2
Cormorant sp.
4
2
3
1
2
2
2
1
Western Kingbird
2
15
1
Brant's Cormorant
3
1
3
1
1
3
4
Finch sp.
2
1
1
2
1
3
1
5
Bonaparte's Gull
3
2
1
1
4
1
3
Common Redpoll
4
5
2
1
3
Yellow-headed Blackbird
1
8
2
1
2
1
Loon sp.
3
3
1
1
1
2
3
Pectoral Sandpiper
1
1
1
6
5
Accipiter sp.
2
3
2
2
3
1
Cackling Goose
3
1
1
1
1
1
3
1
1
Chipping Sparrow
1
6
2
2
2
White-winged Crossbill
1
3
2
2
2
1
2
Barred Owl
1
3
1
1
3
1
1
1
Hawk sp.
1
2
2
1
2
1
1
1
Pygmy Owl
2
2
3
1
3
Gull Hybrid
4
1
3
1
1
Rough-legged Hawk
1
1
1
1
5
1
Western Gull
1
1
1
3
1
2
1
American Redstart
5
3
1
Blackbird sp.
1
1
1
2
2
2
Northern Goshawk
2
1
1
1
1
2
1
Short-eared Owl
1
2
2
4
Gray Catbird
4
1
3
Green Heron
1
1
1
2
3
Long-tailed Duck
1
1
1
1
2
2
Dunlin
1
1
2
3
Golden Eagle
1
3
1
2
Mourning Dove
2
2
1
1
1
Ruddy Duck
1
1
1
3
1
Blue Grouse
3
1
1
1
Eared Grebe
1
2
2
1
Hummingbird sp.
2
1
2
1
Pine Grosbeak
1
1
1
1
2
Shorebird sp.
2
3
1
Solitary Vireo
1
2
1
1
1
Sooty Grouse
1
4
1
Swamp Sparrow
2
2
2
Teal sp.
1
2
2
1
Western Flycatcher
2
1
1
2
White-throated Sparrow
4
2
American Tree Sparrow
1
1
1
1
1
Bank Swallow
2
1
1
1
Common Nighthawk
3
2
Harris's Sparrow
1
1
1
2
Olive-sided Flycatcher
1
3
1
Solitary Sandpiper
2
2
1
Black Oystercatcher
1
2
1
Bohemian Waxwing
1
1
1
1
Corvus sp.
1
1
1
1
Eurasian Collared-Dove
1
1
1
1
Grebe sp.
1
1
1
1
Horned Lark
1
1
2
Lewis's Woodpecker
2
2
Nashville Warbler
1
1
2
Rock Pigeon (Feral Pigeon)
1
1
1
1
Sandhill Crane
1
1
1
1
Semipalmated Sandpiper
1
3
Snow Bunting
1
1
1
1
Yellow-billed Loon
2
1
1
Baird's Sandpiper
1
2
Bewick's Wren
1
1
1
California Scrub-Jay
1
1
1
Cassin's Finch
1
1
1
Common Murre
2
1
Grouse sp.
2
1
Harbour Seal
1
1
1
Lapland Longspur
1
1
1
Long-billed Curlew
2
1
Northern Saw-whet Owl
1
1
1
Number of Species
2
1
Pigeon sp.
1
2
Redhead
1
1
1
Scoter sp.
1
1
1
Sora
2
1
Alcid sp.
1
1
Black Turnstone
1
1
Bullock's Oriole
1
1
Calidris sp.
1
1
Dowitcher sp.
1
1
Empidonax sp.
2
Falcon sp.
1
1
Glaucous Gull
1
1
Goshawk
1
1
Great Gray Owl
1
1
Heermann's Gull
1
1
Lazuli Bunting
1
1
Oldsquaw
1
1
Parasitic Jaeger
1
1
Raptor sp.
1
1
Say's Phoebe
2
Semipalmated Plover
1
1
Short-billed Dowitcher
1
1
Swift sp.
1
1
American Bittern
1
Aythya sp.
1
Back Swift
1
Black-and-White Warbler
1
Blue-gray Gnatcatcher
1
Blue Grouse (Sooty)
1
Blue-winged/Cinnamon Teal
1
Brown-head Cowbird
1
Budgerigar (Budgie)
1
Buteo sp.
1
Cockatoo
1
Common Tern
1
Crossbill sp.
1
Domestic Goose
1
Dove sp.
1
Eurasian Teal
1
Ferruginous Hawk
1
Fringillidae sp.
1
Glaucous
1
Goose sp.
1
Greater/Lesser Scaup
1
Grosbeak sp.
1
gull sp.
1
Heron sp.
1
Iceland Gull
1
Lark Sparrow
1
Least Flycatcher
1
Marbled Murrelet
1
Merganser sp.
1
Northern Mockingbird
1
Nuthatch sp.
1
Palm Warbler
1
passerine sp.
1
peep sp.
1
Pelagic
1
Rail sp.
1
Red-necked Phalarope
1
Rough-winged Swallow
1
Ruddy Turnstone
1
Rusty Blackbird
1
Songbird sp.
1
Sooty (Blue) Grouse
1
Species
1
Spotted Sandiper
1
Steller's Jay (Coastal)
1
Stilt Sandpiper
1
Swainson's Hawk
1
Tundra Swan
1
Veery
1
Vesper Sparrow
1
Vireo sp.
1
Western Meadowlark
1
Whimbrel
1
White-crowned Sparrow (pugetensis)
1
White-winged Scoter
1
Wilson's Phalarope
1
Wren sp.
1