Willow Warbler

Willow Warbler

Phylloscopus trochilus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Snowdonia National Park

📅 Monthly Probability

<5
Jan
<5
Feb
<5
Mar
40–50
Apr
50–60
May
40–50
Jun
10–20
Jul
10–20
Aug
0–10
Sep
<5
Oct
<5
Nov
<5
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Cairngorms National Park 🇬🇧 United Kingdom
40–50%
2 Biebrza National Park 🇵🇱 Poland
40–50%
3 Tatra National Park 🇸🇰 Slovakia
30–40%
4 Białowieża National Park 🇵🇱 Poland
20–30%
5 Snowdonia National Park 🇬🇧 United Kingdom
20–30%
6 Bavarian Forest National Park 🇩🇪 Germany
10–20%
7 Wadden Sea National Park 🇩🇪 Germany
10–20%
8 Lake Nakuru National Park 🇰🇪 Kenya
10–20%
9 Kafue National Park 🇿🇲 Zambia
10–20%
10 Nairobi National Park 🇰🇪 Kenya
10–20%
11 Fertő-Hanság National Park 🇭🇺 Hungary
10–20%
12 Mkomazi National Park 🇹🇿 Tanzania
10–20%
13 Gauja National Park 🇱🇻 Latvia
10–20%
14 Meru National Park 🇰🇪 Kenya
10–20%
15 Etosha National Park 🇳🇦 Namibia
0–10%
16 Ngorongoro Conservation Area 🇹🇿 Tanzania
0–10%
17 Murchison Falls National Park 🇺🇬 Uganda
0–10%
18 Aberdare National Park 🇰🇪 Kenya
0–10%
19 Mana Pools National Park 🇿🇼 Zimbabwe
0–10%
20 South Luangwa National Park 🇿🇲 Zambia
0–10%
21 Tsavo East National Park 🇰🇪 Kenya
0–10%
22 Bale Mountains National Park 🇪🇹 Ethiopia
0–10%
23 Doñana National Park 🇪🇸 Spain
0–10%
24 Chobe National Park 🇧🇼 Botswana
0–10%
25 Niokolo-Koba National Park 🇸🇳 Senegal
0–10%
26 Kibale National Park 🇺🇬 Uganda
0–10%
27 Kidepo Valley National Park 🇺🇬 Uganda
0–10%
28 Akagera National Park 🇷🇼 Rwanda
0–10%
29 Kruger National Park 🇿🇦 South Africa
0–10%
30 Hortobágy National Park 🇭🇺 Hungary
0–10%
31 Gorongosa National Park 🇲🇿 Mozambique
0–10%
32 Pyrénées National Park 🇫🇷 France
0–10%
33 Monfragüe National Park 🇪🇸 Spain
0–10%
34 Waterberg Plateau Park 🇳🇦 Namibia
0–10%
35 Ruaha National Park 🇹🇿 Tanzania
0–10%
36 Kiskunság National Park 🇭🇺 Hungary
0–10%
37 Ordesa y Monte Perdido National Park 🇪🇸 Spain
0–10%
38 Hwange National Park 🇿🇼 Zimbabwe
<5%
39 Tarangire National Park 🇹🇿 Tanzania
<5%
40 Semuliki National Park 🇺🇬 Uganda
<5%
41 Masai Mara National Reserve 🇰🇪 Kenya
<5%
42 Queen Elizabeth National Park 🇺🇬 Uganda
<5%
43 Sierra de Guadarrama National Park 🇪🇸 Spain
<5%
44 Pilanesberg National Park 🇿🇦 South Africa
<5%
45 Addo Elephant National Park 🇿🇦 South Africa
<5%
46 Lake Manyara National Park 🇹🇿 Tanzania
<5%
47 Amboseli National Park 🇰🇪 Kenya
<5%
48 Volcanoes National Park 🇷🇼 Rwanda
<5%
49 Aigüestortes National Park 🇪🇸 Spain
<5%
50 Sierra Nevada National Park 🇪🇸 Spain
<5%
51 Cévennes National Park 🇫🇷 France
<5%
52 Serengeti National Park 🇹🇿 Tanzania
<5%
53 Moremi Game Reserve 🇧🇼 Botswana
<5%
54 iSimangaliso Wetland Park 🇿🇦 South Africa
<5%
55 Samburu National Reserve 🇰🇪 Kenya
<5%
56 Hluhluwe-Imfolozi Park 🇿🇦 South Africa
<5%
57 Triglav National Park 🇸🇮 Slovenia
<5%
58 Bwindi Impenetrable National Park 🇺🇬 Uganda
<5%
59 Nyungwe National Park 🇷🇼 Rwanda
<5%
60 Picos de Europa National Park 🇪🇸 Spain
<5%
61 Garden Route National Park 🇿🇦 South Africa
<5%
62 Vatnajokull National Park 🇮🇸 Iceland
<5%
63 Lower Zambezi National Park 🇿🇲 Zambia
Insufficient data
64 Mercantour National Park 🇫🇷 France
Insufficient data

Quick answers

What are the chances of seeing a Willow Warbler in Snowdonia National Park?

About 24% of visitor-days record a Willow Warbler sighting in Snowdonia National Park, based on 408 observer-days of citizen-science data from GBIF.

When is the best time to see Willow Warbler in Snowdonia National Park?

May has the highest sighting rate for Willow Warbler in Snowdonia National Park in our monthly data.

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