Celastrina (Holarctic Azures)

Species in this group

Celastrina lucia

Daily sighting probability ~40% · Likely

Celastrina argiolus

Daily sighting probability ~30% · Possible

Celastrina ladon

Daily sighting probability ~30% · Possible

Celastrina oreas

Daily sighting probability ~10% · With luck

Celastrina neglectamajor

Daily sighting probability ~10% · With luck

Daily sighting probability by month

Probability-weighted average across the group's species

<5%

Jan

~10%

Feb

~10%

Mar

~20%

Apr

~20%

May

~20%

Jun

~20%

Jul

~10%

Aug

~10%

Sep

<5%

Oct

<5%

Nov

<5%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Holarctic Azures

Warmer areas are where this group is recorded most often. Our parks Our cities

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Isle Royale National Park	🇺🇸 United States	1 of 5	~40%
	Northern Azure			~40%
2	Biebrza National Park	🇵🇱 Poland	1 of 5	~30%
	Holly Blue			~30%
3	Sequoia and Kings Canyon National Parks	🇺🇸 United States	1 of 5	~30%
	Spring Azure			~30%
4	Yosemite National Park	🇺🇸 United States	1 of 5	~20%
	Spring Azure			~20%
5	Aigüestortes National Park	🇪🇸 Spain	1 of 5	~20%
	Holly Blue			~20%
6	Sierra Nevada National Park	🇪🇸 Spain	1 of 5	~20%
	Holly Blue			~20%
7	Monfragüe National Park	🇪🇸 Spain	1 of 5	~20%
	Holly Blue			~20%
8	Kiskunság National Park	🇭🇺 Hungary	1 of 5	~20%
	Holly Blue			~20%
9	Sierra de Guadarrama National Park	🇪🇸 Spain	1 of 5	~20%
	Holly Blue			~20%
10	Triglav National Park	🇸🇮 Slovenia	1 of 5	~20%
	Holly Blue			~20%
11	Cévennes National Park	🇫🇷 France	1 of 5	~20%
	Holly Blue			~20%
12	Channel Islands National Park	🇺🇸 United States	1 of 5	~20%
	Spring Azure			~20%
13	Bavarian Forest National Park	🇩🇪 Germany	1 of 5	~20%
	Holly Blue			~20%
14	Grand Canyon National Park	🇺🇸 United States	2 of 5	~20%
	Spring Azure			~10%
	Holly Blue			~10%
15	Cape Breton Highlands National Park	🇨🇦 Canada	1 of 5	~20%
	Northern Azure			~20%
16	Picos de Europa National Park	🇪🇸 Spain	1 of 5	~20%
	Holly Blue			~20%
17	Redwood National Park	🇺🇸 United States	1 of 5	~20%
	Spring Azure			~20%
18	Mercantour National Park	🇫🇷 France	1 of 5	~10%
	Holly Blue			~10%
19	Taroko National Park	🇹🇼 Taiwan	1 of 5	~10%
	Celastrina oreas			~10%
20	Guadalupe Mountains National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
21	Pyrénées National Park	🇫🇷 France	1 of 5	~10%
	Holly Blue			~10%
22	Riding Mountain National Park	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
23	Snowdonia National Park	🇬🇧 United Kingdom	1 of 5	~10%
	Holly Blue			~10%
24	Los Quetzales National Park	🇨🇷 Costa Rica	1 of 5	~10%
	Spring Azure			~10%
25	Elk Island National Park	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
26	Olympic National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
27	Fertő-Hanság National Park	🇭🇺 Hungary	1 of 5	~10%
	Holly Blue			~10%
28	Gros Morne National Park	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
29	Jasper National Park	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
30	Saguaro National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
31	Great Smoky Mountains National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
32	Great Bear Rainforest	🇨🇦 Canada	1 of 5	~10%
	Spring Azure			~10%
33	Grand Teton National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
34	Wadden Sea National Park	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
35	Rocky Mountain National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
36	Ecrins National Park	🇫🇷 France	1 of 5	~10%
	Holly Blue			~10%
37	Cumbres de Monterrey National Park	🇲🇽 Mexico	1 of 5	~10%
	Spring Azure			~10%
38	Acadia National Park	🇺🇸 United States	1 of 5	~10%
	Northern Azure			~10%
39	Zion National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
40	Pacific Rim National Park Reserve	🇨🇦 Canada	1 of 5	~10%
	Spring Azure			~10%
41	Glacier National Park	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
42	Shenandoah National Park	🇺🇸 United States	1 of 5	~10%
	Appalachian Azure			~10%
43	Big Bend National Park	🇺🇸 United States	1 of 5	<5%
	Spring Azure			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Birmingham	🇬🇧 United Kingdom	1 of 5	~30%
	Holly Blue			~30%
2	London	🇬🇧 United Kingdom	1 of 5	~30%
	Holly Blue			~30%
3	Liverpool	🇬🇧 United Kingdom	1 of 5	~30%
	Holly Blue			~30%
4	Manchester	🇬🇧 United Kingdom	1 of 5	~20%
	Holly Blue			~20%
5	Dublin	🇮🇪 Ireland	1 of 5	~20%
	Holly Blue			~20%
6	Brussels	🇧🇪 Belgium	1 of 5	~20%
	Holly Blue			~20%
7	Budapest	🇭🇺 Hungary	1 of 5	~20%
	Holly Blue			~20%
8	Edmonton	🇨🇦 Canada	1 of 5	~20%
	Northern Azure			~20%
9	Kharkiv	🇺🇦 Ukraine	1 of 5	~20%
	Holly Blue			~20%
10	Suzhou	🇨🇳 China	1 of 5	~20%
	Holly Blue			~20%
11	Copenhagen	🇩🇰 Denmark	1 of 5	~10%
	Holly Blue			~10%
12	Berlin	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
13	Leeds	🇬🇧 United Kingdom	1 of 5	~10%
	Holly Blue			~10%
14	Essen	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
15	Amsterdam	🇳🇱 Netherlands	1 of 5	~10%
	Holly Blue			~10%
16	Rotterdam [The Hague]	🇳🇱 Netherlands	1 of 5	~10%
	Holly Blue			~10%
17	Warsaw	🇵🇱 Poland	1 of 5	~10%
	Holly Blue			~10%
18	Paris	🇫🇷 France	1 of 5	~10%
	Holly Blue			~10%
19	Hamburg	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
20	Prague	🇨🇿 Czechia	1 of 5	~10%
	Holly Blue			~10%
21	Rostov-on-Don	🇷🇺 Russia	1 of 5	~10%
	Holly Blue			~10%
22	Nanjing	🇨🇳 China	1 of 5	~10%
	Holly Blue			~10%
23	Sendai	🇯🇵 Japan	1 of 5	~10%
	Holly Blue			~10%
24	Milan	🇮🇹 Italy	1 of 5	~10%
	Holly Blue			~10%
25	Vienna	🇦🇹 Austria	1 of 5	~10%
	Holly Blue			~10%
26	Munich	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
27	Kyiv	🇺🇦 Ukraine	1 of 5	~10%
	Holly Blue			~10%
28	Barcelona	🇪🇸 Spain	1 of 5	~10%
	Holly Blue			~10%
29	Istanbul	🇹🇷 Turkey	1 of 5	~10%
	Holly Blue			~10%
30	Toluca	🇲🇽 México	1 of 5	~10%
	Spring Azure			~10%
31	Tehran	🇮🇷 Iran	1 of 5	~10%
	Holly Blue			~10%
32	Turin	🇮🇹 Italy	1 of 5	~10%
	Holly Blue			~10%
33	Qingdao	🇨🇳 China	1 of 5	~10%
	Holly Blue			~10%
34	Lyon	🇫🇷 France	1 of 5	~10%
	Holly Blue			~10%
35	Cologne	🇩🇪 Germany	1 of 5	~10%
	Holly Blue			~10%
36	Beijing	🇨🇳 China	1 of 5	~10%
	Holly Blue			~10%
37	Seoul	🇰🇷 South Korea	1 of 5	~10%
	Holly Blue			~10%
38	Seattle	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
39	Osaka	🇯🇵 Japan	1 of 5	~10%
	Holly Blue			~10%
40	Rome	🇮🇹 Italy	1 of 5	~10%
	Holly Blue			~10%
41	Mexico City	🇲🇽 México	1 of 5	~10%
	Spring Azure			~10%
42	Porto	🇵🇹 Portugal	1 of 5	~10%
	Holly Blue			~10%
43	Tokyo	🇯🇵 Japan	1 of 5	~10%
	Holly Blue			~10%
44	Toronto	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
45	Novosibirsk	🇷🇺 Russia	1 of 5	~10%
	Holly Blue			~10%
46	Calgary	🇨🇦 Canada	1 of 5	~10%
	Northern Azure			~10%
47	Kazan	🇷🇺 Russia	1 of 5	~10%
	Holly Blue			~10%
48	Helsinki	🇫🇮 Finland	1 of 5	~10%
	Holly Blue			~10%
49	San Francisco	🇺🇸 United States	1 of 5	~10%
	Spring Azure			~10%
50	Bucharest	🇷🇴 Romania	1 of 5	~10%
	Holly Blue			~10%
51	Yekaterinburg	🇷🇺 Russia	1 of 5	<5%
	Holly Blue			<5%
52	Madrid	🇪🇸 Spain	1 of 5	<5%
	Holly Blue			<5%
53	Stockholm	🇸🇪 Sweden	1 of 5	<5%
	Holly Blue			<5%
54	Vancouver	🇨🇦 Canada	1 of 5	<5%
	Spring Azure			<5%
55	New York City	🇺🇸 United States	2 of 5	<5%
	Northern Azure			<5%
	Spring Azure			<5%
56	Montreal	🇨🇦 Canada	1 of 5	<5%
	Northern Azure			<5%
57	Philadelphia	🇺🇸 United States	1 of 5	<5%
	Spring Azure			<5%
58	Moscow	🇷🇺 Russia	1 of 5	<5%
	Holly Blue			<5%
59	Portland	🇺🇸 United States	1 of 5	<5%
	Spring Azure			<5%
60	Lisbon	🇵🇹 Portugal	1 of 5	<5%
	Holly Blue			<5%

Holarctic Azures

Species in this group

Northern Azure

Holly Blue

Spring Azure

Celastrina oreas

Appalachian Azure

Daily sighting probability by month

When they're spotted

Where to see Holarctic Azures

Parks Ranked

Cities Ranked