6 species arrived in the last two weeks after being absent — most recently American Crow.
30-day diversity is Moderate (Shannon index 1.586), up 6 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.
American Crow
First seen: Sep 14
6 detections
Trumpeter Swan
First seen: Sep 14
1 detections
House Finch
First seen: Sep 14
8 detections
Black-capped Chickadee
First seen: Sep 14
5 detections
Chestnut-backed Chickadee
First seen: Sep 14
2 detections
Red-breasted Nuthatch
First seen: Sep 14
2 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.
All regular species still active!✓
📅 Year-over-Year Arrival Comparison (2025 vs 2026) iTracking if migratory species arrived earlier or later than they did in the previous calendar year.
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.
