Insights: Migration

Seasonal trends and migration tracking.
In plain English
  • 31 species arrived in the last two weeks after being absent — most recently Green-winged Teal.
  • 30-day diversity is High (Shannon index 2.329), up 36 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.
Green-winged Teal
First seen: Sep 3
3 detections
Black-headed Gull
First seen: Sep 3
1 detections
Eurasian Coot
First seen: Sep 3
1 detections
Barn Swallow
First seen: Sep 3
2 detections
European Golden-Plover
First seen: Sep 3
1 detections
Water Rail
First seen: Sep 3
1 detections
European Goldfinch
First seen: Sep 2
1 detections
Goldcrest
First seen: Sep 2
40 detections
Eurasian Nuthatch
First seen: Sep 2
16 detections
Green Sandpiper
First seen: Sep 2
1 detections
Fieldfare
First seen: Sep 2
4 detections
Mallard
First seen: Sep 1
3 detections
Eurasian Jay
First seen: Sep 1
1 detections
Coal Tit
First seen: Sep 1
2 detections
Eurasian Blackcap
First seen: Sep 1
1 detections
Sandwich Tern
First seen: Sep 1
1 detections
Yellowhammer
First seen: Aug 31
2 detections
Common Chaffinch
First seen: Aug 31
2 detections
Mistle Thrush
First seen: Aug 31
2 detections
Ring-necked Pheasant
First seen: Aug 25
21 detections
European Greenfinch
First seen: Aug 23
2 detections
Eurasian Jackdaw
First seen: Aug 23
2 detections
Eurasian Green Woodpecker
First seen: Aug 23
8 detections
Reed Bunting
First seen: Aug 22
1 detections
Common Buzzard
First seen: Aug 21
1 detections
Dunlin
First seen: Aug 21
1 detections
Eurasian Moorhen
First seen: Aug 21
1 detections
Gray Wagtail
First seen: Aug 21
6 detections
Eurasian Bullfinch
First seen: Aug 21
7 detections
Eurasian Collared-Dove
First seen: Aug 21
1 detections
Song Thrush
First seen: Aug 21
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.
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.
Eurasian Magpie
456 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Long-tailed Tit
382 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Robin
333 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Dunnock
161 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Blue Tit
127 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Great Tit
118 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Carrion Crow
45 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Goldcrest
40 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Wren
23 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Ring-necked Pheasant
21 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Redwing
20 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Wood-Pigeon
16 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Nuthatch
16 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Blackbird
12 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common House-Martin
11 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Gray Heron
9 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Green Woodpecker
8 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Rock Pigeon
8 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Bullfinch
7 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Treecreeper
7 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Gray Wagtail
6 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Raven
5 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Chiffchaff
4 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Fieldfare
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
Mallard
3 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Barn Swallow
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Coal Tit
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Chaffinch
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Jackdaw
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Greenfinch
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Mistle Thrush
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Song Thrush
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
White Wagtail
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Yellowhammer
2 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Black-headed Gull
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Buzzard
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Dunlin
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Blackcap
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Collared-Dove
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Coot
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Jay
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Moorhen
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Golden-Plover
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Goldfinch
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Green Sandpiper
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Herring Gull
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Reed Bunting
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Sandwich Tern
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Water Rail
1 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D