Fall Migration Phenology

There has been considerable work done to compile fall migration dates for the Willamette Valley.  Joel Geier and Alan McGie have been compiling data from 1983 through 2009.

Their work is presented below.  However this is not a finished body of work.    The authors note:

“It has not been sorted through as carefully as Alan’s compilation for the spring months.  If you want to use these data on your website, that would be fine; you could call it “based on data from a draft compilation” so that people don’t get the idea that this is a fully edited product.”

I want to thank Joel and Alan for making this information available and for their dedication in compiling migration data for our ecoregion.  They have truly enriched our understanding of avian movement through the Willamette Valley.

In the table below ‘N’ is the number of observation years.

Order Species N Earliest Mean Median
1 Greater White-fronted Goose 15 Aug 25 Oct 07 Oct 05
2 Emperor Goose 3 Dec 04 Dec 10 Dec 08
3 Snow Goose 15 Sep 10 Oct 22 Oct 19
4 Ross’s Goose 5 Nov 12 Nov 28 Nov 16
5 Brant 5 Nov 14 Dec 08 Dec 12
6 Cackling Goose 6 Sep 24 Sep 29 Sep 28
7 Dusky Canada Goose 1 Oct 19 Oct 19 Oct 19
8 Trumpeter Swan 6 Oct 29 Nov 12 Nov 16
9 Tundra Swan 19 Oct 05 Nov 03 Oct 31
10 Gadwall 8 Sep 05 Oct 05 Sep 29
11 Eurasian Wigeon 16 Oct 19 Nov 06 Nov 05
12 American Wigeon 8 Aug 26 Sep 08 Sep 10
13 American Black Duck 1 Jul 11 Jul 11 Jul 11
14 Northern Shoveler 8 Aug 06 Aug 31 Sep 01
15 Northern Pintail 7 Aug 19 Sep 04 Sep 08
16 Green-winged Teal 8 Aug 22 Sep 14 Sep 15
17 Eurasian Green-winged Teal 1 Dec 19 Dec 19 Dec 19
18 Canvasback 7 Aug 16 Oct 09 Oct 14
19 Redhead 5 Oct 04 Nov 05 Oct 28
20 Ring-necked Duck 10 Sep 03 Sep 25 Sep 18
21 Tufted Duck 1 Nov 05 Nov 05 Nov 05
22 Greater Scaup 7 Oct 05 Oct 11 Oct 09
23 Lesser Scaup 8 Sep 12 Sep 29 Sep 25
24 Harlequin Duck 1 Oct 29 Oct 29 Oct 29
25 Surf Scoter 6 Oct 05 Oct 10 Oct 10
26 White-winged Scoter 3 Oct 22 Oct 30 Nov 04
27 Black Scoter 1 Jan 13 Jan 13 Jan 13
28 Long-tailed Duck 2 Nov 26 Dec 15 Dec 15
29 Bufflehead 6 Sep 24 Oct 18 Oct 12
30 Common Goldeneye 6 Oct 30 Nov 15 Nov 10
31 Barrow’s Goldeneye 6 Oct 22 Nov 04 Nov 05
32 Red-breasted Merganser 3 Aug 29 Oct 18 Oct 12
33 Ruddy Duck 8 Aug 04 Sep 14 Sep 15
34 Red-throated Loon 1 Oct 20 Oct 20 Oct 20
35 Pacific Loon 3 Oct 19 Nov 22 Nov 04
36 Common Loon 7 Sep 21 Oct 10 Oct 09
37 Horned Grebe 11 Aug 12 Sep 20 Sep 23
38 Red-necked Grebe 4 Oct 14 Nov 14 Nov 03
39 Eared Grebe 12 Aug 18 Oct 06 Oct 08
40 Western Grebe 11 Aug 13 Sep 27 Oct 05
41 Clark’s Grebe 3 Sep 14 Oct 16 Oct 13
42 American White Pelican 2 Jul 10 Aug 30 Aug 30
43 Double-crested Cormorant 7 Sep 10 Sep 29 Sep 27
44 Great Egret 7 Jul 10 Aug 09 Jul 30
45 Snowy Egret 1 Oct 17 Oct 17 Oct 17
46 Cattle Egret 5 Oct 25 Nov 12 Nov 11
47 Black-crowned Night-Heron 6 Jun 25 Aug 21 Aug 25
48 Broad-winged Hawk 2 Sep 10 Sep 20 Sep 20
49 Swainson’s Hawk 1 Sep 22 Sep 22 Sep 22
50 White-faced Ibis 1 Aug 13 Aug 13 Aug 13
51 Northern Goshawk 3 Oct 11 Oct 20 Oct 21
52 Ferruginous Hawk 5 Sep 15 Nov 06 Nov 18
53 Rough-legged Hawk 19 Sep 03 Oct 20 Oct 18
54 Golden Eagle 6 Sep 16 Oct 29 Oct 28
55 Crested Caracara 1 Mar 12 Mar 12 Mar 12
56 Merlin 18 Aug 04 Sep 22 Sep 26
57 Gyrfalcon 6 Sep 19 Nov 21 Nov 29
58 Peregrine Falcon 7 Aug 03 Sep 10 Sep 11
59 Prairie Falcon 11 Aug 29 Oct 17 Oct 31
60 Sandhill Crane 6 Sep 29 Oct 10 Oct 10
61 Black-bellied Plover 6 Jul 22 Sep 17 Sep 05
62 American Golden-Plover 5 Sep 01 Oct 07 Sep 30
63 Pacific Golden-Plover 6 Sep 11 Nov 24 Dec 11
64 Semipalmated Plover 7 Jul 14 Aug 16 Aug 21
65 Mountain Plover 2 Dec 25 Dec 29 Dec 29
66 American Avocet 1 Oct 04 Oct 04 Oct 04
67 Solitary Sandpiper 8 Jul 21 Aug 15 Aug 12
68 Wandering Tattler 1 Aug 22 Aug 22 Aug 22
69 Greater Yellowlegs 13 Jun 26 Jul 25 Jul 22
70 Lesser Yellowlegs 13 Jul 14 Aug 14 Aug 19
71 Whimbrel 1 Sep 01 Sep 01 Sep 01
72 Long-billed Curlew 2 Sep 11 Oct 19 Oct 19
73 Marbled Godwit 1 Aug 05 Aug 05 Aug 05
74 Ruddy Turnstone 1 Aug 13 Aug 13 Aug 13
75 Sanderling 2 Aug 17 Aug 29 Aug 29
76 Semipalmated Sandpiper 4 Aug 03 Aug 22 Aug 20
77 Western Sandpiper 9 Jun 20 Jul 29 Aug 02
78 Least Sandpiper 6 Jun 18 Jul 28 Jul 27
79 Baird’s Sandpiper 8 Jul 27 Aug 24 Aug 22
80 Pectoral Sandpiper 14 Aug 19 Sep 05 Sep 04
81 Sharp-tailed Sandpiper 1 Sep 18 Sep 18 Sep 18
82 Dunlin 9 Aug 02 Sep 29 Oct 18
83 Stilt Sandpiper 2 Sep 07 Sep 18 Sep 18
84 Buff-breasted Sandpiper 1 Aug 30 Aug 30 Aug 30
85 Ruff 3 Sep 05 Oct 04 Sep 21
86 Short-billed Dowitcher 2 Aug 12 Aug 25 Aug 25
87 Long-billed Dowitcher 5 Jul 09 Jul 22 Jul 22
88 Wilson’s Snipe 8 Aug 06 Aug 28 Aug 24
89 Wilson’s Phalarope 3 Aug 04 Aug 17 Aug 21
90 Red-necked Phalarope 11 Jul 28 Sep 02 Aug 21
91 Red Phalarope 2 Nov 14 Dec 03 Dec 03
92 Sabine’s Gull 3 Sep 08 Sep 15 Sep 17
93 Bonaparte’s Gull 7 Aug 03 Oct 21 Oct 30
94 Franklin’s Gull 1 Nov 16 Nov 16 Nov 16
95 Mew Gull 3 Oct 01 Nov 14 Nov 26
96 Ring-billed Gull 5 Jul 11 Aug 26 Aug 21
97 California Gull 7 Jul 10 Sep 10 Sep 15
98 Western Gull 3 Jan 20 Aug 04 Nov 01
99 Herring Gull 8 Jul 21 Nov 03 Nov 12
100 Thayer’s Gull 2 Dec 27 Dec 30 Dec 30
101 Glaucous-winged Gull 4 Oct 21 Nov 03 Nov 01
102 Glaucous Gull 3 Mar 13 Sep 21 Dec 25
103 Caspian Tern 5 Jul 03 Jul 31 Jul 30
104 Forster’s Tern 2 Sep 10 Sep 13 Sep 13
105 Common Tern 1 Sep 15 Sep 15 Sep 15
106 Pomarine Jaeger 1 Oct 15 Oct 15 Oct 15
107 Snowy Owl 2 Nov 18 Nov 21 Nov 21
108 Burrowing Owl 9 Sep 25 Oct 28 Oct 20
109 Short-eared Owl 7 Sep 18 Oct 25 Oct 30
110 Black Swift 3 Aug 21 Aug 30 Aug 28
111 Lewis’s Woodpecker 12 Sep 03 Sep 22 Sep 19
112 Yellow-bellied Sapsucker 2 Dec 11 Dec 29 Dec 29
113 Red-naped Sapsucker 0 Dec 31 #DIV/0! #NUM!
114 Yellow-shafted Flicker 1 Oct 18 Oct 18 Oct 18
115 Say’s Phoebe 5 Sep 11 Oct 17 Nov 03
116 Ash-throated Flycatcher 1 Sep 27 Sep 27 Sep 27
117 Eastern Kingbird 1 Aug 30 Aug 30 Aug 30
118 Loggerhead Shrike 5 Oct 20 Nov 11 Nov 08
119 Northern Shrike 16 Oct 04 Oct 22 Oct 21
120 Blue-headed Vireo 1 Aug 11 Aug 11 Aug 11
121 Blue Jay 1 Nov 07 Nov 07 Nov 07
122 Clark’s Nutcracker 5 Aug 31 Oct 10 Oct 17
123 Horned Lark 4 Sep 09 Sep 22 Sep 15
124 Bank Swallow 2 Aug 02 Aug 18 Aug 18
125 Mountain Chickadee 4 Jul 04 Sep 02 Sep 06
126 Rock Wren 2 Sep 18 Oct 08 Oct 08
127 Sedge Wren 1 Jan 04 Jan 04 Jan 04
128 Golden-crowned Kinglet 3 Sep 11 Sep 24 Sep 26
129 Ruby-crowned Kinglet 15 Sep 05 Sep 22 Sep 21
130 Blue-gray Gnatcatcher 2 Aug 10 Sep 25 Sep 25
131 Northern Wheatear 1 Oct 02 Oct 02 Oct 02
132 Townsend’s Solitaire 4 Sep 23 Oct 26 Oct 16
133 Hermit Thrush 14 Sep 02 Sep 30 Sep 21
134 Varied Thrush 6 Sep 20 Oct 04 Sep 30
135 Northern Mockingbird 1 Dec 02 Dec 02 Dec 02
136 Bohemian Waxwing 0 Dec 31 #DIV/0! #NUM!
137 White Wagtail 1 Dec 12 Dec 12 Dec 12
138 American Pipit 15 Sep 05 Sep 24 Sep 21
139 Tennessee Warbler 1 Sep 21 Sep 21 Sep 21
140 Orange-crowned Warbler (gray-headed ssp.) 3 Aug 27 Sep 06 Sep 09
141 Nashville Warbler 2 Sep 10 Sep 14 Sep 14
142 Yellow-rumped Warbler 7 Sep 08 Sep 23 Sep 21
143 Black-throated Gray Warbler 6 Aug 07 Aug 27 Aug 20
144 Townsend’s Warbler 15 Aug 19 Sep 29 Sep 25
145 Black-and-white Warbler 1 Sep 10 Sep 10 Sep 10
146 Palm Warbler 4 Sep 24 Oct 20 Oct 16
147 Summer Tanager 1 Jul 23 Jul 23 Jul 23
148 American Tree Sparrow 2 Oct 20 Oct 31 Oct 31
149 Clay-colored Sparrow 4 Nov 04 Dec 22 Dec 30
150 Brewer’s Sparrow 2 Aug 17 Aug 24 Aug 24
151 Lark Sparrow 1 Dec 27 Dec 27 Dec 27
152 Black-throated Sparrow 1 Oct 17 Oct 17 Oct 17
153 Lark Bunting 1 Aug 13 Aug 13 Aug 13
154 Savannah Sparrow 1 Oct 11 Oct 11 Oct 11
155 Red Fox Sparrow 1 Dec 31 Dec 31 Dec 31
156 Sooty Fox Sparrow 18 Sep 03 Sep 17 Sep 17
157 Slate-colored Fox Sparrow 2 Dec 14 Dec 23 Dec 23
158 Lincoln’s Sparrow 19 Aug 28 Sep 13 Sep 14
159 Swamp Sparrow 8 Oct 25 Dec 01 Dec 03
160 White-throated Sparrow 19 Sep 18 Oct 13 Oct 11
161 Harris’s Sparrow 6 Nov 17 Dec 11 Dec 16
162 Golden-crowned Sparrow 21 Sep 07 Sep 18 Sep 18
163 Slate-colored Junco 6 Sep 23 Oct 27 Oct 12
164 Lapland Longspur 4 Sep 20 Nov 08 Nov 07
165 Chestnut-collared Longspur 1 Oct 18 Oct 18 Oct 18
166 Snow Bunting 6 Oct 26 Oct 30 Oct 30
167 Rose-breasted Grosbeak 2 Jul 18 Sep 28 Sep 28
168 Indigo Bunting 1 Sep 07 Sep 07 Sep 07
169 Western Meadowlark 6 Sep 16 Oct 17 Oct 13
170 Brambling 0 Dec 31 #DIV/0! #NUM!
171 Gray-crowned Rosy-Finch 13 Oct 20 Nov 06 Nov 03
172 Cassin’s Finch 3 Oct 19 Oct 28 Oct 22
173 Common Redpoll 3 Nov 14 Nov 21 Nov 23
174 Pine Siskin 3 Sep 14 Oct 13 Oct 18

Here is the list in chronological order by mean date:

Order Species N Earliest Mean Median
55 Crested Caracara 1 Mar 12 Mar 12 Mar 12
13 American Black Duck 1 Jul 11 Jul 11 Jul 11
87 Long-billed Dowitcher 5 Jul 09 Jul 22 Jul 22
147 Summer Tanager 1 Jul 23 Jul 23 Jul 23
69 Greater Yellowlegs 13 Jun 26 Jul 25 Jul 22
78 Least Sandpiper 6 Jun 18 Jul 28 Jul 27
77 Western Sandpiper 9 Jun 20 Jul 29 Aug 02
103 Caspian Tern 5 Jul 03 Jul 31 Jul 30
98 Western Gull 3 Jan 20 Aug 04 Nov 01
73 Marbled Godwit 1 Aug 05 Aug 05 Aug 05
44 Great Egret 7 Jul 10 Aug 09 Jul 30
120 Blue-headed Vireo 1 Aug 11 Aug 11 Aug 11
50 White-faced Ibis 1 Aug 13 Aug 13 Aug 13
74 Ruddy Turnstone 1 Aug 13 Aug 13 Aug 13
153 Lark Bunting 1 Aug 13 Aug 13 Aug 13
70 Lesser Yellowlegs 13 Jul 14 Aug 14 Aug 19
67 Solitary Sandpiper 8 Jul 21 Aug 15 Aug 12
64 Semipalmated Plover 7 Jul 14 Aug 16 Aug 21
89 Wilson’s Phalarope 3 Aug 04 Aug 17 Aug 21
124 Bank Swallow 2 Aug 02 Aug 18 Aug 18
47 Black-crowned Night-Heron 6 Jun 25 Aug 21 Aug 25
68 Wandering Tattler 1 Aug 22 Aug 22 Aug 22
76 Semipalmated Sandpiper 4 Aug 03 Aug 22 Aug 20
150 Brewer’s Sparrow 2 Aug 17 Aug 24 Aug 24
79 Baird’s Sandpiper 8 Jul 27 Aug 24 Aug 22
86 Short-billed Dowitcher 2 Aug 12 Aug 25 Aug 25
96 Ring-billed Gull 5 Jul 11 Aug 26 Aug 21
143 Black-throated Gray Warbler 6 Aug 07 Aug 27 Aug 20
88 Wilson’s Snipe 8 Aug 06 Aug 28 Aug 24
75 Sanderling 2 Aug 17 Aug 29 Aug 29
42 American White Pelican 2 Jul 10 Aug 30 Aug 30
84 Buff-breasted Sandpiper 1 Aug 30 Aug 30 Aug 30
117 Eastern Kingbird 1 Aug 30 Aug 30 Aug 30
110 Black Swift 3 Aug 21 Aug 30 Aug 28
14 Northern Shoveler 8 Aug 06 Aug 31 Sep 01
71 Whimbrel 1 Sep 01 Sep 01 Sep 01
90 Red-necked Phalarope 11 Jul 28 Sep 02 Aug 21
125 Mountain Chickadee 4 Jul 04 Sep 02 Sep 06
15 Northern Pintail 7 Aug 19 Sep 04 Sep 08
80 Pectoral Sandpiper 14 Aug 19 Sep 05 Sep 04
140 Orange-crowned Warbler (gray-headed ssp.) 3 Aug 27 Sep 06 Sep 09
168 Indigo Bunting 1 Sep 07 Sep 07 Sep 07
12 American Wigeon 8 Aug 26 Sep 08 Sep 10
145 Black-and-white Warbler 1 Sep 10 Sep 10 Sep 10
58 Peregrine Falcon 7 Aug 03 Sep 10 Sep 11
97 California Gull 7 Jul 10 Sep 10 Sep 15
104 Forster’s Tern 2 Sep 10 Sep 13 Sep 13
158 Lincoln’s Sparrow 19 Aug 28 Sep 13 Sep 14
141 Nashville Warbler 2 Sep 10 Sep 14 Sep 14
33 Ruddy Duck 8 Aug 04 Sep 14 Sep 15
16 Green-winged Teal 8 Aug 22 Sep 14 Sep 15
105 Common Tern 1 Sep 15 Sep 15 Sep 15
92 Sabine’s Gull 3 Sep 08 Sep 15 Sep 17
61 Black-bellied Plover 6 Jul 22 Sep 17 Sep 05
156 Sooty Fox Sparrow 18 Sep 03 Sep 17 Sep 17
81 Sharp-tailed Sandpiper 1 Sep 18 Sep 18 Sep 18
162 Golden-crowned Sparrow 21 Sep 07 Sep 18 Sep 18
83 Stilt Sandpiper 2 Sep 07 Sep 18 Sep 18
48 Broad-winged Hawk 2 Sep 10 Sep 20 Sep 20
37 Horned Grebe 11 Aug 12 Sep 20 Sep 23
139 Tennessee Warbler 1 Sep 21 Sep 21 Sep 21
102 Glaucous Gull 3 Mar 13 Sep 21 Dec 25
49 Swainson’s Hawk 1 Sep 22 Sep 22 Sep 22
56 Merlin 18 Aug 04 Sep 22 Sep 26
123 Horned Lark 4 Sep 09 Sep 22 Sep 15
129 Ruby-crowned Kinglet 15 Sep 05 Sep 22 Sep 21
111 Lewis’s Woodpecker 12 Sep 03 Sep 22 Sep 19
142 Yellow-rumped Warbler 7 Sep 08 Sep 23 Sep 21
138 American Pipit 15 Sep 05 Sep 24 Sep 21
128 Golden-crowned Kinglet 3 Sep 11 Sep 24 Sep 26
20 Ring-necked Duck 10 Sep 03 Sep 25 Sep 18
130 Blue-gray Gnatcatcher 2 Aug 10 Sep 25 Sep 25
116 Ash-throated Flycatcher 1 Sep 27 Sep 27 Sep 27
40 Western Grebe 11 Aug 13 Sep 27 Oct 05
167 Rose-breasted Grosbeak 2 Jul 18 Sep 28 Sep 28
82 Dunlin 9 Aug 02 Sep 29 Oct 18
6 Cackling Goose 6 Sep 24 Sep 29 Sep 28
23 Lesser Scaup 8 Sep 12 Sep 29 Sep 25
43 Double-crested Cormorant 7 Sep 10 Sep 29 Sep 27
144 Townsend’s Warbler 15 Aug 19 Sep 29 Sep 25
133 Hermit Thrush 14 Sep 02 Sep 30 Sep 21
131 Northern Wheatear 1 Oct 02 Oct 02 Oct 02
66 American Avocet 1 Oct 04 Oct 04 Oct 04
85 Ruff 3 Sep 05 Oct 04 Sep 21
134 Varied Thrush 6 Sep 20 Oct 04 Sep 30
10 Gadwall 8 Sep 05 Oct 05 Sep 29
39 Eared Grebe 12 Aug 18 Oct 06 Oct 08
62 American Golden-Plover 5 Sep 01 Oct 07 Sep 30
1 Greater White-fronted Goose 15 Aug 25 Oct 07 Oct 05
126 Rock Wren 2 Sep 18 Oct 08 Oct 08
18 Canvasback 7 Aug 16 Oct 09 Oct 14
60 Sandhill Crane 6 Sep 29 Oct 10 Oct 10
25 Surf Scoter 6 Oct 05 Oct 10 Oct 10
36 Common Loon 7 Sep 21 Oct 10 Oct 09
122 Clark’s Nutcracker 5 Aug 31 Oct 10 Oct 17
22 Greater Scaup 7 Oct 05 Oct 11 Oct 09
154 Savannah Sparrow 1 Oct 11 Oct 11 Oct 11
160 White-throated Sparrow 19 Sep 18 Oct 13 Oct 11
174 Pine Siskin 3 Sep 14 Oct 13 Oct 18
106 Pomarine Jaeger 1 Oct 15 Oct 15 Oct 15
41 Clark’s Grebe 3 Sep 14 Oct 16 Oct 13
45 Snowy Egret 1 Oct 17 Oct 17 Oct 17
59 Prairie Falcon 11 Aug 29 Oct 17 Oct 31
152 Black-throated Sparrow 1 Oct 17 Oct 17 Oct 17
169 Western Meadowlark 6 Sep 16 Oct 17 Oct 13
115 Say’s Phoebe 5 Sep 11 Oct 17 Nov 03
114 Yellow-shafted Flicker 1 Oct 18 Oct 18 Oct 18
165 Chestnut-collared Longspur 1 Oct 18 Oct 18 Oct 18
29 Bufflehead 6 Sep 24 Oct 18 Oct 12
32 Red-breasted Merganser 3 Aug 29 Oct 18 Oct 12
7 Dusky Canada Goose 1 Oct 19 Oct 19 Oct 19
72 Long-billed Curlew 2 Sep 11 Oct 19 Oct 19
34 Red-throated Loon 1 Oct 20 Oct 20 Oct 20
51 Northern Goshawk 3 Oct 11 Oct 20 Oct 21
146 Palm Warbler 4 Sep 24 Oct 20 Oct 16
53 Rough-legged Hawk 19 Sep 03 Oct 20 Oct 18
93 Bonaparte’s Gull 7 Aug 03 Oct 21 Oct 30
119 Northern Shrike 16 Oct 04 Oct 22 Oct 21
3 Snow Goose 15 Sep 10 Oct 22 Oct 19
109 Short-eared Owl 7 Sep 18 Oct 25 Oct 30
132 Townsend’s Solitaire 4 Sep 23 Oct 26 Oct 16
163 Slate-colored Junco 6 Sep 23 Oct 27 Oct 12
108 Burrowing Owl 9 Sep 25 Oct 28 Oct 20
172 Cassin’s Finch 3 Oct 19 Oct 28 Oct 22
24 Harlequin Duck 1 Oct 29 Oct 29 Oct 29
54 Golden Eagle 6 Sep 16 Oct 29 Oct 28
166 Snow Bunting 6 Oct 26 Oct 30 Oct 30
26 White-winged Scoter 3 Oct 22 Oct 30 Nov 04
148 American Tree Sparrow 2 Oct 20 Oct 31 Oct 31
9 Tundra Swan 19 Oct 05 Nov 03 Oct 31
101 Glaucous-winged Gull 4 Oct 21 Nov 03 Nov 01
99 Herring Gull 8 Jul 21 Nov 03 Nov 12
31 Barrow’s Goldeneye 6 Oct 22 Nov 04 Nov 05
21 Tufted Duck 1 Nov 05 Nov 05 Nov 05
19 Redhead 5 Oct 04 Nov 05 Oct 28
171 Gray-crowned Rosy-Finch 13 Oct 20 Nov 06 Nov 03
52 Ferruginous Hawk 5 Sep 15 Nov 06 Nov 18
11 Eurasian Wigeon 16 Oct 19 Nov 06 Nov 05
121 Blue Jay 1 Nov 07 Nov 07 Nov 07
164 Lapland Longspur 4 Sep 20 Nov 08 Nov 07
118 Loggerhead Shrike 5 Oct 20 Nov 11 Nov 08
46 Cattle Egret 5 Oct 25 Nov 12 Nov 11
8 Trumpeter Swan 6 Oct 29 Nov 12 Nov 16
38 Red-necked Grebe 4 Oct 14 Nov 14 Nov 03
95 Mew Gull 3 Oct 01 Nov 14 Nov 26
30 Common Goldeneye 6 Oct 30 Nov 15 Nov 10
94 Franklin’s Gull 1 Nov 16 Nov 16 Nov 16
107 Snowy Owl 2 Nov 18 Nov 21 Nov 21
57 Gyrfalcon 6 Sep 19 Nov 21 Nov 29
173 Common Redpoll 3 Nov 14 Nov 21 Nov 23
35 Pacific Loon 3 Oct 19 Nov 22 Nov 04
63 Pacific Golden-Plover 6 Sep 11 Nov 24 Dec 11
4 Ross’s Goose 5 Nov 12 Nov 28 Nov 16
159 Swamp Sparrow 8 Oct 25 Dec 01 Dec 03
135 Northern Mockingbird 1 Dec 02 Dec 02 Dec 02
91 Red Phalarope 2 Nov 14 Dec 03 Dec 03
5 Brant 5 Nov 14 Dec 08 Dec 12
2 Emperor Goose 3 Dec 04 Dec 10 Dec 08
161 Harris’s Sparrow 6 Nov 17 Dec 11 Dec 16
137 White Wagtail 1 Dec 12 Dec 12 Dec 12
28 Long-tailed Duck 2 Nov 26 Dec 15 Dec 15
17 Eurasian Green-winged Teal 1 Dec 19 Dec 19 Dec 19
149 Clay-colored Sparrow 4 Nov 04 Dec 22 Dec 30
157 Slate-colored Fox Sparrow 2 Dec 14 Dec 23 Dec 23
151 Lark Sparrow 1 Dec 27 Dec 27 Dec 27
65 Mountain Plover 2 Dec 25 Dec 29 Dec 29
112 Yellow-bellied Sapsucker 2 Dec 11 Dec 29 Dec 29
100 Thayer’s Gull 2 Dec 27 Dec 30 Dec 30
155 Red Fox Sparrow 1 Dec 31 Dec 31 Dec 31
127 Sedge Wren 1 Jan 04 Jan 04 Jan 04
27 Black Scoter 1 Jan 13 Jan 13 Jan 13

2 thoughts on “Fall Migration Phenology

  1. Pingback: 2012 Fall Migration Update | birds over portland

  2. Pingback: Migrant Phenology for the Northern Willamette Valley | birds over portland

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