Insights: Migration

Seasonal trends and migration tracking.
In plain English
  • 5 species arrived in the last two weeks after being absent — most recently Eurasian Kestrel.
  • Gray Heron has gone quiet: last heard 15 days ago after 9 detections — 12 regulars are on this list.
  • 30-day diversity is Moderate (Shannon index 1.328), up 49 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.
Eurasian Kestrel
First seen: Oct 15
1 detections
Common Greenshank
First seen: Oct 11
1 detections
Common Buzzard
First seen: Oct 4
3 detections
European Golden-Plover
First seen: Oct 4
2 detections
Sandwich Tern
First seen: Oct 4
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.
Gray Heron
9 total · Last: Oct 3
15d ago
Common Wood-Pigeon
570 total · Last: Sep 29
19d ago
Green-winged Teal
10 total · Last: Sep 26
22d ago
Eurasian Collared-Dove
198 total · Last: Sep 25
23d ago
Eurasian Linnet
6 total · Last: Sep 22
26d ago
Common House-Martin
361 total · Last: Sep 20
28d ago
European Greenfinch
25 total · Last: Sep 18
30d ago
Black Redstart
15 total · Last: Sep 13
35d ago
Barn Swallow
205 total · Last: Sep 5
43d ago
Tree Pipit
263 total · Last: Aug 30
49d ago
Eurasian Curlew
6 total · Last: Aug 22
57d ago
Common Swift
33 total · Last: Aug 2
77d 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.
European Robin
37,205 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
House Sparrow
4,222 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Blue Tit
3,469 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Dunnock
3,100 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Magpie
2,975 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Great Tit
1,253 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Redwing
1,246 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Goldfinch
889 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Common Wood-Pigeon
570 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Wren
443 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Water Rail
395 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
European Starling
393 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Common House-Martin
361 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Goldcrest
347 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Hawfinch
307 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Long-tailed Tit
306 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Jackdaw
280 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Tree Pipit
263 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Chiffchaff
253 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Great Spotted Woodpecker
238 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Barn Swallow
205 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Collared-Dove
198 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Song Thrush
160 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Blackbird
141 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Herring Gull
137 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Gray Wagtail
109 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Marsh Tit
75 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Coot
72 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Reed Bunting
57 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Wigeon
53 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Chaffinch
44 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Green Woodpecker
42 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Bullfinch
41 detections Seasonal
J
F
M
A
M
J
J
A
S
O
N
D
Dunlin
40 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Rook
36 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Swift
33 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Common Sandpiper
32 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Siskin
32 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Green Sandpiper
28 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
European Greenfinch
25 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
White Wagtail
24 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Carrion Crow
22 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Meadow Pipit
16 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Black Redstart
15 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Gadwall
15 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Yellowhammer
15 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Brambling
13 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Tree Sparrow
12 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Eurasian Moorhen
11 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D
Green-winged Teal
10 detections Transient
J
F
M
A
M
J
J
A
S
O
N
D