Insights: Migration

Seasonal trends and migration tracking.
In plain English
  • 9 species arrived in the last two weeks after being absent โ€” most recently Northern Cardinal.
  • 30-day diversity is Low (Shannon index 1.066), up 9 species compared with this month last year.

๐Ÿฆ… Migration & Seasonal Patterns

๐Ÿ†• 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.
Northern Cardinal
First seen: Sep 28
163 detections
Blue Jay
First seen: Sep 28
24 detections
Downy Woodpecker
First seen: Sep 28
3 detections
Hairy Woodpecker
First seen: Sep 28
44 detections
Gray Catbird
First seen: Sep 28
3 detections
Red-bellied Woodpecker
First seen: Sep 28
4 detections
House Sparrow
First seen: Sep 28
1 detections
White-breasted Nuthatch
First seen: Sep 28
2 detections
American Goldfinch
First seen: Sep 28
1 detections
๐Ÿ”‡ Gone Quiet iRegular residents that haven't been detected in at least 14 days. This may indicate they have migrated away or changed territories.
All regular species still active! โœ“
๐Ÿ“… 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 โ€”
๐Ÿ—“๏ธ Seasonal Presence iClassification Guide:
โ€ข Year-round: Detected across 9+ months
โ€ข Seasonal: Detected across 3-8 months
โ€ข 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.
Northern Cardinal
163 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Hairy Woodpecker
44 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Blue Jay
24 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Red-bellied Woodpecker
4 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Downy Woodpecker
3 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Gray Catbird
3 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
American Goldfinch
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
House Sparrow
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D