Insights: Migration

Seasonal trends and migration tracking.
In plain English
  • 10 species arrived in the last two weeks after being absent — most recently Townsend's Solitaire.
  • Song Sparrow has gone quiet: last heard 16 days ago after 8 detections — 3 regulars are on this list.
  • 30-day diversity is Very High (Shannon index 2.676), up 45 species compared with this month last year.

🦅 Migration & Seasonal Patterns

🆕 New Arrivals (Last 14 Days) iSpecies appearing in the last 14 days that were absent for the previous 2 weeks. Useful for tracking return migration.
Townsend's Solitaire
First seen: Nov 13
1 detections
Ruby-crowned Kinglet
First seen: Nov 11
1 detections
Glaucous-winged Gull
First seen: Nov 11
1 detections
Northern Pygmy-Owl
First seen: Nov 10
1 detections
American Kestrel
First seen: Nov 9
1 detections
Savannah Sparrow
First seen: Nov 5
1 detections
European Starling
First seen: Nov 5
23 detections
Common Redpoll
First seen: Nov 3
2 detections
Snow Goose
First seen: Nov 3
2 detections
Eurasian Collared-Dove
First seen: Nov 3
1 detections
🔇 Gone Quiet iRegular residents that haven't been detected in at least 14 days. This may indicate they have migrated away or changed territories.
Song Sparrow
8 total · Last: Oct 28
16d ago
Trumpeter Swan
6 total · Last: Oct 26
18d ago
Mountain Chickadee
5 total · Last: Oct 22
22d ago
📅 Year-over-Year Arrival Comparison (2025 vs 2026) iTracking if migratory species arrived earlier or later than they did in the previous calendar year.
Not enough multi-year data yet —
🗓️ Seasonal Presence iClassification Guide:
• Year-round: Detected across 9+ months
• Seasonal: Detected across 3-8 months
• Transient: Detected <3 months

Data Accuracy Disclaimer:
These classifications may be inaccurate if the station has been running for less than a full year, as it lacks seasonal historical context.

Bar height is expected frequency. Purple highlights are actual detections.
American Crow
1,506 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Bushtit
850 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
House Finch
546 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Black-capped Chickadee
402 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Northern Flicker
381 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Cedar Waxwing
334 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Red-breasted Nuthatch
324 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Golden-crowned Kinglet
320 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Anna's Hummingbird
279 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Steller's Jay
272 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Yellow-rumped Warbler
228 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Chestnut-backed Chickadee
175 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Dark-eyed Junco
172 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
American Robin
94 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Bewick's Wren
87 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Pine Siskin
77 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
American Goldfinch
32 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Starling
23 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Bohemian Waxwing
22 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Raven
22 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Golden-crowned Sparrow
20 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Cackling Goose
17 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Pacific Wren
16 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Pileated Woodpecker
15 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Townsend's Solitaire
14 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Hermit Thrush
12 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Spotted Towhee
12 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Evening Grosbeak
9 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Brown Creeper
8 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Mallard
8 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Song Sparrow
8 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Varied Thrush
7 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Gadwall
6 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
House Sparrow
6 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Trumpeter Swan
6 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Mountain Chickadee
5 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Canada Goose
4 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Downy Woodpecker
4 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Green-winged Teal
3 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Peregrine Falcon
3 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Snow Goose
3 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
American Kestrel
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
American Pipit
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Goldeneye
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Redpoll
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Cooper's Hawk
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Red-tailed Hawk
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
White-breasted Nuthatch
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Wood Duck
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
American Wigeon
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D