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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
2026
51
53
46
81
69
70
70
65
66
63
2025
49
50
46
87
75
66
67
67
59
66
56
41
2024
46
44
48
77
69
72
66
48
52
53
50
58
2023
51
44
57
65
75
70
65
64
63
52
55
44
2022
51
44
51
78
92
75
70
57
59
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
72
57
56
52
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
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
45
50
45
36
34
40
40
1991
44
32

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 36.
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
34
34
35
35
35
35
35
35
35
36
35
34
Mallard
34
34
35
35
35
35
35
35
35
36
35
34
Song Sparrow
34
34
35
35
35
35
35
35
35
36
35
34
Great Blue Heron
34
34
35
35
35
35
35
35
35
36
35
33
Black-capped Chickadee
34
34
34
34
35
35
35
35
35
36
34
34
Canada Goose
34
34
35
35
35
35
35
33
35
34
32
33
Common Merganser
33
34
35
35
35
35
35
32
34
34
34
34
Common Raven
32
32
34
35
33
33
34
34
35
35
35
33
Northern Flicker
31
30
34
36
34
34
34
33
34
36
35
33
American Robin
24
31
35
35
35
35
35
34
35
35
33
21
Bald Eagle
34
33
33
33
34
34
33
29
23
33
35
34
Steller's Jay
34
31
34
33
32
28
25
34
35
36
34
32
European Starling
27
25
33
35
35
36
35
33
33
32
27
24
Northwestern Crow
30
30
31
31
31
31
31
31
30
31
31
30
Belted Kingfisher
26
25
26
27
27
29
33
31
35
35
33
33
Spotted Towhee
30
30
30
29
30
30
31
30
29
30
28
30
Chestnut-backed Chickadee
26
27
29
32
27
25
30
30
27
29
27
26
Red-winged Blackbird
14
32
35
35
35
34
35
35
30
30
9
8
Golden-crowned Kinglet
34
31
30
30
29
14
16
17
25
35
33
34
House Finch
25
28
30
30
31
30
27
30
25
23
24
24
Downy Woodpecker
29
27
27
33
21
27
27
24
27
28
24
32
Pine Siskin
28
24
25
31
31
27
24
27
22
27
31
29
Rock Pigeon
26
24
28
30
30
26
29
29
28
25
27
23
Double-crested Cormorant
34
34
35
32
15
12
15
15
18
32
35
34
Green-winged Teal
23
22
28
35
28
8
8
24
35
35
34
29
Dark-eyed Junco
33
31
33
33
19
14
6
6
20
34
34
34
American Wigeon
30
31
34
34
25
9
4
5
25
32
33
33
White-crowned Sparrow
13
11
13
35
35
35
35
35
34
28
9
11
Winter Wren
22
22
25
24
24
25
24
19
15
24
24
26
Mew Gull
27
28
21
23
23
4
5
16
25
30
31
30
Bufflehead
34
34
35
35
32
5
3
2
1
12
35
34
Hairy Woodpecker
24
16
20
24
21
23
20
22
23
25
19
21
Northern Pintail
28
32
35
34
16
4
1
8
27
26
22
25
Purple Finch
12
8
15
30
31
27
23
21
23
24
18
14
House Sparrow
18
18
17
21
25
25
22
21
18
22
15
20
Common Goldeneye
34
34
35
34
18
8
3
2
4
2
31
34
Hooded Merganser
24
27
29
30
13
4
6
12
12
24
31
25
Pelagic Cormorant
32
31
29
23
5
1
4
5
7
23
33
34
Savannah Sparrow
3
1
28
34
35
34
24
35
22
1
Varied Thrush
30
25
31
32
18
6
3
1
22
21
22
Red-tailed Hawk
27
24
23
11
5
1
11
11
25
27
31
Ruby-crowned Kinglet
16
15
14
33
25
7
3
2
7
25
21
26
Yellow-rumped Warbler
1
4
36
34
25
19
13
35
25
1
1
Pileated Woodpecker
15
16
16
27
20
15
13
13
14
15
13
13
Common Yellowthroat
11
35
35
35
34
29
8
Barrow's Goldeneye
24
27
33
25
13
5
2
29
25
Turkey Vulture
1
1
21
31
30
32
31
25
8
Red-breasted Nuthatch
11
8
11
17
22
19
12
18
23
15
10
11
Gull sp.
26
17
19
9
16
11
11
13
13
15
17
17
Rufous Hummingbird
1
34
35
35
34
25
5
3
Band-tailed Pigeon
10
27
32
33
31
25
11
Horned Grebe
23
24
24
18
4
1
6
20
25
23
American Goldfinch
2
2
9
28
32
30
28
23
9
1
2
Killdeer
3
3
13
27
32
25
17
16
14
7
6
2
Barn Swallow
2
5
33
35
35
35
18
Tree Swallow
5
31
35
35
33
22
2
Violet-green Swallow
5
31
33
35
34
22
2
Red Crossbill
10
11
11
15
15
9
14
20
18
20
8
9
Cedar Waxwing
1
1
10
35
35
34
27
11
3
2
Brown Creeper
15
18
14
11
7
8
12
10
11
14
17
16
Red-breasted Sapsucker
8
6
17
23
19
21
13
5
10
12
8
8
Common Loon
12
6
6
30
17
17
3
2
4
10
20
18
Brown-headed Cowbird
1
10
35
35
33
19
5
3
1
1
Spotted Sandpiper
1
1
1
29
34
34
32
9
2
Swainson's Thrush
4
22
35
35
30
13
1
Northern Rough-winged Swallow
14
33
31
33
23
5
Yellow Warbler
6
24
32
32
27
16
2
Eurasian Collared Dove
13
11
14
13
15
11
9
12
8
10
12
9
Peregrine Falcon
4
6
4
9
13
13
22
15
14
17
8
10
Osprey
11
26
26
26
21
19
4
1
Cooper's Hawk
13
10
8
7
3
4
7
9
16
19
19
14
Black-throated Gray Warbler
3
29
28
23
20
15
2
Northern Harrier
3
1
4
8
13
3
3
12
23
26
15
7
Bushtit
12
6
14
14
10
10
10
8
6
9
10
8
Fox Sparrow
21
17
11
16
4
2
1
3
12
12
18
Willow Flycatcher
4
34
33
31
13
Anna's Hummingbird
11
9
10
10
9
8
7
7
11
11
11
10
Sharp-shinned Hawk
10
7
3
4
3
4
1
9
16
22
15
17
Trumpeter Swan
23
13
19
3
4
2
2
1
1
2
18
22
Orange-crowned Warbler
17
34
19
13
10
12
3
Merlin
9
4
4
7
9
2
4
11
24
17
6
10
Warbling Vireo
2
22
29
25
20
9
American Dipper
13
14
10
10
2
3
4
16
21
13
Lesser Scaup
11
12
22
27
13
1
3
7
5
5
Evening Grosbeak
6
4
10
16
21
7
6
9
7
7
5
6
Virginia Rail
3
1
4
7
8
10
12
12
14
14
9
8
Ruffed Grouse
4
6
4
15
13
8
2
3
9
14
8
13
Chickadee sp.
6
8
5
9
8
7
9
7
8
10
10
8
Brewer's Blackbird
7
4
4
12
10
6
6
7
10
14
6
6
Pacific Wren
9
7
8
10
9
7
8
4
8
7
8
7
Marsh Wren
4
2
7
6
10
9
9
10
8
10
6
10
Greater Scaup
7
6
18
22
13
9
9
3
Red-eyed Vireo
6
29
29
21
1
1
Black-headed Grosbeak
1
17
30
24
9
2
2
Northern Shrike
12
17
14
3
8
15
15
Western Tanager
18
19
20
17
10
Golden-crowned Sparrow
9
7
6
9
24
1
4
11
3
9
Pied-billed Grebe
13
5
9
15
1
1
4
12
9
12
Pacific-slope Flycatcher
1
21
28
22
7
1
Ring-necked Duck
1
5
8
26
15
1
3
2
6
7
5
American Crow
4
5
7
7
7
6
8
6
7
9
6
4
Swallow sp.
14
19
14
14
11
4
American Pipit
9
25
2
2
2
10
16
3
1
Meadowlark
6
3
9
5
6
2
4
19
9
7
Wilson's Warbler
2
29
20
5
9
5
Hammond's Flycatcher
21
23
19
4
2
Passerine sp.
7
4
6
2
6
4
7
4
10
6
7
5
Western Grebe
6
6
2
3
4
16
22
9
Wood Duck
2
1
5
9
9
9
12
3
4
12
1
1
MacGillivray's Warbler
16
20
14
6
5
Northern Shoveler
1
5
19
1
1
2
14
12
4
2
Caspian Tern
17
22
15
3
4
Ring-billed Gull
5
4
1
7
10
3
2
6
6
8
2
4
Vaux's Swift
12
18
13
10
5
Gadwall
4
5
7
10
7
3
1
4
1
5
7
3
Red-throated Loon
12
10
9
3
2
1
1
1
5
11
Goldeneye sp.
8
9
8
10
2
2
7
8
Rufous-sided Towhee
1
2
5
6
5
5
4
4
6
5
5
4
Surf Scoter
6
12
13
4
9
1
2
4
1
American Coot
3
1
8
1
1
14
13
10
Western x Glaucous-winged Gull
8
8
7
2
6
1
1
1
1
5
7
4
Townsend's Warbler
1
22
10
8
2
5
2
Woodpecker sp.
1
2
4
7
6
3
2
7
5
4
6
3
California Gull
2
1
1
5
9
1
2
8
6
7
4
1
Purple Martin
1
7
11
10
11
5
1
Least Sandpiper
2
10
3
25
4
1
Lincoln's Sparrow
1
4
7
1
20
10
1
1
Duck sp.
5
3
5
2
2
1
4
8
6
5
3
Black Swift
2
4
14
12
10
1
Cassin's Vireo
1
12
15
7
6
2
Red-breasted Merganser
7
8
6
3
1
3
1
1
2
5
2
4
Kestrel
2
8
10
2
11
3
4
2
Sparrow sp.
1
2
2
3
5
2
7
3
10
4
1
Thayer's Gull
7
6
3
1
1
1
3
4
7
6
Western Wood-Pewee
6
16
9
4
4
Greater Yellowlegs
13
6
1
8
5
5
Red-necked Grebe
5
2
5
9
1
4
3
6
3
Wilson's Snipe
1
3
13
6
1
2
4
6
1
Long-billed Dowitcher
1
4
4
4
6
12
2
Snow Goose
3
2
1
4
6
1
1
1
5
6
3
Short-billed Gull
3
4
4
3
5
2
4
3
3
Greater White-fronted Goose
3
4
2
5
5
1
1
2
2
1
4
Cliff Swallow
1
5
8
5
6
3
Mountain Bluebird
1
2
19
4
1
1
Herring Gull
3
2
1
1
4
1
2
4
2
7
Pacific Loon
5
3
2
4
2
1
1
1
4
4
Western Sandpiper
7
2
12
6
Flycatcher sp.
5
5
3
8
5
Cinnamon Teal
1
7
12
2
2
1
Eurasian Wigeon
3
3
2
8
2
4
3
Sandpiper sp.
4
4
7
6
2
1
Eastern Kingbird
1
16
4
2
Townsend's Solitaire
14
7
1
1
Warbler sp.
1
3
7
4
5
3
Hermit Thrush
4
5
6
1
3
2
1
Scaup sp.
1
4
3
5
5
3
Blue-winged Teal
11
4
1
2
2
Eurasian Collared-Dove
1
1
1
1
1
4
3
2
3
1
1
1
Great Horned Owl
2
1
2
2
3
2
2
1
5
Canvasback
3
1
1
2
3
1
1
3
4
Common Snipe
1
1
3
2
2
1
2
4
3
Harlequin Duck
1
1
6
4
1
1
3
1
1
Hutton's Vireo
2
3
5
4
1
1
1
2
Kinglet sp.
3
2
2
1
3
2
3
3
Lesser Yellowlegs
4
1
11
2
Cormorant sp.
4
2
3
1
2
2
2
1
Western Kingbird
2
15
1
Barred Owl
1
3
1
1
4
1
1
2
1
1
Brant's Cormorant
3
1
3
1
1
3
4
Common Redpoll
4
5
2
1
4
Finch sp.
2
1
1
2
1
3
1
5
American Redstart
8
6
1
Bonaparte's Gull
3
2
1
1
4
1
3
Cackling Goose
3
1
1
2
1
1
3
2
1
Gray Catbird
7
4
3
1
Loon sp.
3
3
1
1
2
2
3
Pectoral Sandpiper
1
1
1
6
6
Yellow-headed Blackbird
1
8
2
1
2
1
Chipping Sparrow
1
6
2
3
2
Rock Pigeon (Feral Pigeon)
1
1
1
1
2
1
2
2
1
1
1
Accipiter sp.
2
3
2
2
3
1
White-winged Crossbill
1
3
2
2
2
1
2
Hawk sp.
1
2
2
1
3
1
1
1
Pygmy Owl
2
2
3
1
4
Gull Hybrid
4
1
3
1
1
1
Western Flycatcher
1
3
2
2
3
Rough-legged Hawk
1
1
1
1
5
1
Western Gull
1
1
1
3
1
2
1
Blackbird sp.
1
1
1
2
2
2
Long-tailed Duck
1
1
1
1
3
2
Northern Goshawk
2
1
1
1
1
2
1
Short-eared Owl
1
2
2
4
Green Heron
1
1
1
2
3
Mourning Dove
2
2
2
1
1
Dunlin
1
1
2
3
Golden Eagle
1
3
1
2
White-throated Sparrow
1
4
2
Blue Grouse
3
1
1
1
Common Nighthawk
3
3
Eared Grebe
1
2
2
1
Hummingbird sp.
2
1
2
1
Olive-sided Flycatcher
1
3
2
Pine Grosbeak
1
1
1
1
2
Ruddy Duck
1
1
1
3
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
American Tree Sparrow
1
1
1
1
1
Bank Swallow
2
1
1
1
Bohemian Waxwing
1
1
1
2
Corvus sp.
1
1
2
1
Harris's Sparrow
1
1
1
2
Northern Yellow Warbler
1
1
1
1
1
Solitary Sandpiper
2
2
1
Baird's Sandpiper
1
3
Black Oystercatcher
1
2
1
Grebe sp.
1
1
1
1
Horned Lark
1
1
2
Lapland Longspur
1
1
1
1
Lewis's Woodpecker
2
2
Long-billed Curlew
3
1
Nashville Warbler
1
1
2
Sandhill Crane
1
1
1
1
Semipalmated Sandpiper
1
3
Snow Bunting
1
1
1
1
Western Warbling Vireo
1
1
1
1
Yellow-billed Loon
2
1
1
Bewick's Wren
1
1
1
Bullock's Oriole
1
2
California Scrub-Jay
1
1
1
Cassin's Finch
1
1
1
Common Murre
2
1
Goshawk
1
1
1
Grouse sp.
2
1
Harbour Seal
1
1
1
Lazuli Bunting
1
1
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
Swift sp.
2
1
Western Meadowlark
1
2
Alcid sp.
1
1
American Kestrel
1
1
Black Turnstone
1
1
Calidris sp.
1
1
Dowitcher sp.
1
1
Empidonax sp.
2
Falcon sp.
1
1
Great Gray Owl
1
1
gull sp.
1
1
Heermann's Gull
1
1
Oldsquaw
1
1
Parasitic Jaeger
1
1
Raptor sp.
1
1
Rock Dove
1
1
Say's Phoebe
2
Semipalmated Plover
1
1
Short-billed Dowitcher
1
1
Short-blled Gull
2
Western (Pacific-sl.)Flycatcher
1
1
American Bittern
1
Ash-throated Flycatcher
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
Clark's Nutcracker
1
Cockatoo
1
Common Tern
1
Crossbill sp.
1
Dark-eyed Junco (Oregon)
1
Domestic Goose
1
Dove sp.
1
Eurasian Collared-dove
1
Eurasian Teal
1
Ferruginous Hawk
1
Fringillidae sp.
1
Glaucous
1
Glaucous Gull
1
Goose sp.
1
Greater/Lesser Scaup
1
Green-winged Teal (American)
1
Grosbeak sp.
1
Heron sp.
1
Hooded Merganzer
1
Iceland Gull
1
Lark Sparrow
1
Least Flycatcher
1
Marbled Murrelet
1
Merganser sp.
1
Northern Flicker (Red-shafted)
1
Northern Mockingbird
1
Nuthatch sp.
1
Palm Warbler
1
passerine sp.
1
peep sp.
1
Pelagic
1
Pied Bil Grebe
1
Rail sp.
1
Red-necked Phalarope
1
Red-tailed hawk
1
Red-wing Blackbird
1
Rough-winged Swallow
1
Ruddy Turnstone
1
Rusty Blackbird
1
Sharp-shinned/Cooper's Hawk
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 Flycatcher (Pacific-slope)
1
Whimbrel
1
White-crowned Sparrow (pugetensis)
1
White-winged Scoter
1
Wilson's Phalarope
1
Wren sp.
1
Yellow-rumped Warbler (Audubon's)
1
Yellow-rumped Warbler (Myrtle)
1