Insights: Migration

Seasonal trends and migration tracking.
In plain English
  • 5 species arrived in the last two weeks after being absent โ€” most recently Northern Flicker.
  • 30-day diversity is Low (Shannon index 0.952), up 5 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 Flicker
First seen: Aug 11
2 detections
Merlin
First seen: Aug 11
2 detections
House Finch
First seen: Aug 11
4 detections
Black-billed Magpie
First seen: Aug 11
23 detections
Common Grackle
First seen: Aug 11
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.
Black-billed Magpie
23 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
House Finch
4 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Merlin
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Northern Flicker
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Grackle
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D