Genus

Masked Gulls and allies

Chroicocephalus

10 species in our catalog · found in 105 parks

KingdomAnimalia (Animals)
PhylumChordata (Chordates)
ClassAves (Birds)
OrderCharadriiformes (Shorebirds and Allies)
FamilyLaridae (Gulls, Terns, and Skimmers)
GenusChroicocephalus (Masked Gulls and allies)

Species in this group

Chroicocephalus novaehollandiae

Daily sighting probability >90% · Very likely

Chroicocephalus hartlaubii

Daily sighting probability ~80% · Very likely

Chroicocephalus ridibundus

Daily sighting probability ~70% · Very likely

Chroicocephalus cirrocephalus

Daily sighting probability ~60% · Likely

Chroicocephalus serranus

Daily sighting probability ~50% · Likely

Chroicocephalus philadelphia

Daily sighting probability ~50% · Likely

Endemic

Chroicocephalus bulleri

Daily sighting probability ~40% · Likely

Chroicocephalus maculipennis

Daily sighting probability ~20% · Possible

Chroicocephalus genei

Daily sighting probability ~20% · Possible

Chroicocephalus brunnicephalus

Daily sighting probability ~10% · With luck

See all 10 species Show fewer

Daily sighting probability by month

Probability-weighted average across the group's species

~50%

Jan

~50%

Feb

~50%

Mar

~50%

Apr

~50%

May

~50%

Jun

~50%

Jul

~50%

Aug

~50%

Sep

~50%

Oct

~50%

Nov

~50%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Masked Gulls and allies

Warmer areas are where this group is recorded most often. Our parks Our cities In captivity: 18 zoos & centres

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Rottnest Island	🇦🇺 Australia	1 of 10	>90%
	Silver Gull			>90%
2	Rakiura National Park	🇳🇿 New Zealand	2 of 10	~80%
	Silver Gull			~80%
	Black-billed Gull			<5%
3	West Coast National Park	🇿🇦 South Africa	2 of 10	~80%
	Hartlaub's Gull			~80%
	Grey-hooded Gull			<5%
4	Ningaloo Marine Park	🇦🇺 Australia	1 of 10	~80%
	Silver Gull			~80%
5	Camargue	🇫🇷 France	2 of 10	~80%
	Black-headed Gull			~70%
	Slender-billed Gull			~20%
6	Wilsons Promontory National Park	🇦🇺 Australia	1 of 10	~80%
	Silver Gull			~80%
7	Freycinet National Park	🇦🇺 Australia	1 of 10	~80%
	Silver Gull			~80%
8	Wadden Sea National Park	🇩🇪 Germany	2 of 10	~80%
	Black-headed Gull			~70%
	Bonaparte's Gull			<5%
9	Cape Range	🇦🇺 Australia	1 of 10	~70%
	Silver Gull			~70%
10	Maria Island National Park	🇦🇺 Australia	1 of 10	~70%
	Silver Gull			~70%
11	Hortobágy National Park	🇭🇺 Hungary	1 of 10	~70%
	Black-headed Gull			~70%
12	Kiskunság National Park	🇭🇺 Hungary	1 of 10	~60%
	Black-headed Gull			~60%
13	Lake Nakuru National Park	🇰🇪 Kenya	3 of 10	~60%
	Grey-hooded Gull			~60%
	Black-headed Gull			~10%
	Slender-billed Gull			<5%
14	Fertő-Hanság National Park	🇭🇺 Hungary	1 of 10	~60%
	Black-headed Gull			~60%
15	Abel Tasman National Park	🇳🇿 New Zealand	2 of 10	~60%
	Silver Gull			~50%
	Black-billed Gull			~10%
16	Lauca National Park	🇨🇱 Chile	1 of 10	~50%
	Andean Gull			~50%
17	Fiordland National Park	🇳🇿 New Zealand	2 of 10	~50%
	Black-billed Gull			~40%
	Silver Gull			~20%
18	Point Pelee National Park	🇨🇦 Canada	1 of 10	~50%
	Bonaparte's Gull			~50%
19	Biebrza National Park	🇵🇱 Poland	1 of 10	~50%
	Black-headed Gull			~50%
20	Noosa National Park	🇦🇺 Australia	1 of 10	~50%
	Silver Gull			~50%
21	Booderee National Park	🇦🇺 Australia	1 of 10	~40%
	Silver Gull			~40%
22	Snowdonia National Park	🇬🇧 United Kingdom	1 of 10	~40%
	Black-headed Gull			~40%
23	Table Mountain National Park	🇿🇦 South Africa	2 of 10	~40%
	Hartlaub's Gull			~40%
	Grey-hooded Gull			<5%
24	Flinders Chase	🇦🇺 Australia	1 of 10	~40%
	Silver Gull			~40%
25	Doñana National Park	🇪🇸 Spain	2 of 10	~40%
	Black-headed Gull			~20%
	Slender-billed Gull			~20%
26	Cairngorms National Park	🇬🇧 United Kingdom	1 of 10	~30%
	Black-headed Gull			~30%
27	iSimangaliso Wetland Park	🇿🇦 South Africa	2 of 10	~30%
	Grey-hooded Gull			~30%
	Hartlaub's Gull			<5%
28	Vatnajokull National Park	🇮🇸 Iceland	1 of 10	~30%
	Black-headed Gull			~30%
29	Royal National Park	🇦🇺 Australia	1 of 10	~30%
	Silver Gull			~30%
30	Great Otway National Park	🇦🇺 Australia	1 of 10	~30%
	Silver Gull			~30%
31	Katmai National Park	🇺🇸 United States	1 of 10	~30%
	Bonaparte's Gull			~30%
32	Sierra de Guadarrama National Park	🇪🇸 Spain	1 of 10	~30%
	Black-headed Gull			~30%
33	Bavarian Forest National Park	🇩🇪 Germany	1 of 10	~20%
	Black-headed Gull			~20%
34	Liwonde National Park	🇲🇼 Malawi	1 of 10	~20%
	Grey-hooded Gull			~20%
35	Península Valdés	🇦🇷 Argentina	1 of 10	~20%
	Brown-hooded Gull			~20%
36	Great Bear Rainforest	🇨🇦 Canada	1 of 10	~20%
	Bonaparte's Gull			~20%
37	Ngorongoro Conservation Area	🇹🇿 Tanzania	2 of 10	~20%
	Grey-hooded Gull			~20%
	Black-headed Gull			<5%
38	Merritt Island National Wildlife Refuge	🇺🇸 United States	1 of 10	~20%
	Bonaparte's Gull			~20%
39	Queen Elizabeth National Park	🇺🇬 Uganda	1 of 10	~20%
	Grey-hooded Gull			~20%
40	Chobe National Park	🇧🇼 Botswana	1 of 10	~20%
	Grey-hooded Gull			~20%
41	Torres del Paine National Park	🇨🇱 Chile	1 of 10	~20%
	Brown-hooded Gull			~20%
42	Białowieża National Park	🇵🇱 Poland	1 of 10	~20%
	Black-headed Gull			~20%
43	El Vizcaíno Biosphere Reserve	🇲🇽 Mexico	1 of 10	~20%
	Bonaparte's Gull			~20%
44	Egmont National Park	🇳🇿 New Zealand	1 of 10	~20%
	Silver Gull			~20%
45	De Hoop Nature Reserve	🇿🇦 South Africa	2 of 10	~20%
	Hartlaub's Gull			~10%
	Grey-hooded Gull			~10%
46	Elk Island National Park	🇨🇦 Canada	1 of 10	~10%
	Bonaparte's Gull			~10%
47	Sundarbans National Park	🇮🇳 India	2 of 10	~10%
	Brown-headed Gull			~10%
	Black-headed Gull			<5%
48	Monfragüe National Park	🇪🇸 Spain	1 of 10	~10%
	Black-headed Gull			~10%
49	Murchison Falls National Park	🇺🇬 Uganda	3 of 10	~10%
	Grey-hooded Gull			~10%
	Black-headed Gull			<5%
	Slender-billed Gull			<5%
50	Gauja National Park	🇱🇻 Latvia	1 of 10	~10%
	Black-headed Gull			~10%
51	Vicente Pérez Rosales National Park	🇨🇱 Chile	1 of 10	~10%
	Brown-hooded Gull			~10%
52	Kluane National Park	🇨🇦 Canada	1 of 10	~10%
	Bonaparte's Gull			~10%
53	Garden Route National Park	🇿🇦 South Africa	2 of 10	~10%
	Grey-hooded Gull			<5%
	Hartlaub's Gull			<5%
54	Wrangell-St. Elias National Park	🇺🇸 United States	1 of 10	~10%
	Bonaparte's Gull			~10%
55	Kafue National Park	🇿🇲 Zambia	1 of 10	~10%
	Grey-hooded Gull			~10%
56	Addo Elephant National Park	🇿🇦 South Africa	2 of 10	~10%
	Grey-hooded Gull			<5%
	Hartlaub's Gull			<5%
57	Kenai Fjords National Park	🇺🇸 United States	1 of 10	~10%
	Bonaparte's Gull			~10%
58	Aoraki Mount Cook National Park	🇳🇿 New Zealand	1 of 10	~10%
	Black-billed Gull			~10%
59	Channel Islands National Park	🇺🇸 United States	1 of 10	~10%
	Bonaparte's Gull			~10%
60	Celestún Biosphere Reserve	🇲🇽 Mexico	1 of 10	<5%
	Bonaparte's Gull			<5%
61	Riding Mountain National Park	🇨🇦 Canada	1 of 10	<5%
	Bonaparte's Gull			<5%
62	Cabo Pulmo National Park	🇲🇽 Mexico	1 of 10	<5%
	Bonaparte's Gull			<5%
63	Svalbard	🇳🇴 Norway	1 of 10	<5%
	Black-headed Gull			<5%
64	Kosciuszko National Park	🇦🇺 Australia	1 of 10	<5%
	Silver Gull			<5%
65	Acadia National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
66	Redwood National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
67	Namib-Naukluft National Park	🇳🇦 Namibia	1 of 10	<5%
	Hartlaub's Gull			<5%
68	Lake Manyara National Park	🇹🇿 Tanzania	1 of 10	<5%
	Grey-hooded Gull			<5%
69	Pilanesberg National Park	🇿🇦 South Africa	1 of 10	<5%
	Grey-hooded Gull			<5%
70	Grampians National Park	🇦🇺 Australia	1 of 10	<5%
	Silver Gull			<5%
71	Kaziranga National Park	🇮🇳 India	2 of 10	<5%
	Brown-headed Gull			<5%
	Black-headed Gull			<5%
72	Keoladeo National Park	🇮🇳 India	2 of 10	<5%
	Black-headed Gull			<5%
	Brown-headed Gull			<5%
73	Pacific Rim National Park Reserve	🇨🇦 Canada	1 of 10	<5%
	Bonaparte's Gull			<5%
74	Padre Island National Seashore	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
75	Mana Pools National Park	🇿🇼 Zimbabwe	1 of 10	<5%
	Grey-hooded Gull			<5%
76	Tierra del Fuego National Park	🇦🇷 Argentina	1 of 10	<5%
	Brown-hooded Gull			<5%
77	Cape Breton Highlands National Park	🇨🇦 Canada	1 of 10	<5%
	Bonaparte's Gull			<5%
78	Olympic National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
79	Daintree National Park	🇦🇺 Australia	1 of 10	<5%
	Silver Gull			<5%
80	Bahía de Loreto National Park	🇲🇽 Mexico	1 of 10	<5%
	Bonaparte's Gull			<5%
81	Arthur's Pass National Park	🇳🇿 New Zealand	1 of 10	<5%
	Black-billed Gull			<5%
82	Nahuel Huapi National Park	🇦🇷 Argentina	1 of 10	<5%
	Brown-hooded Gull			<5%
83	Amboseli National Park	🇰🇪 Kenya	1 of 10	<5%
	Grey-hooded Gull			<5%
84	Serengeti National Park	🇹🇿 Tanzania	1 of 10	<5%
	Grey-hooded Gull			<5%
85	Everglades National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
86	Arusha National Park	🇹🇿 Tanzania	1 of 10	<5%
	Grey-hooded Gull			<5%
87	uMkhuze Game Reserve	🇿🇦 South Africa	1 of 10	<5%
	Grey-hooded Gull			<5%
88	Triglav National Park	🇸🇮 Slovenia	1 of 10	<5%
	Black-headed Gull			<5%
89	Death Valley National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
90	Machalilla National Park	🇪🇨 Ecuador	1 of 10	<5%
	Grey-hooded Gull			<5%
91	Satpura National Park	🇮🇳 India	2 of 10	<5%
	Black-headed Gull			<5%
	Brown-headed Gull			<5%
92	Tsavo West National Park	🇰🇪 Kenya	1 of 10	<5%
	Grey-hooded Gull			<5%
93	Hattah-Kulkyne National Park	🇦🇺 Australia	1 of 10	<5%
	Silver Gull			<5%
94	Ranthambore National Park	🇮🇳 India	1 of 10	<5%
	Brown-headed Gull			<5%
95	Jasper National Park	🇨🇦 Canada	1 of 10	<5%
	Bonaparte's Gull			<5%
96	Chitwan National Park	🇳🇵 Nepal	1 of 10	<5%
	Black-headed Gull			<5%
97	Nairobi National Park	🇰🇪 Kenya	1 of 10	<5%
	Grey-hooded Gull			<5%
98	Banff National Park	🇨🇦 Canada	1 of 10	<5%
	Bonaparte's Gull			<5%
99	Ciénaga de Zapata	🇨🇺 Cuba	1 of 10	<5%
	Bonaparte's Gull			<5%
100	Kruger National Park	🇿🇦 South Africa	1 of 10	<5%
	Grey-hooded Gull			<5%
101	Etosha National Park	🇳🇦 Namibia	1 of 10	<5%
	Grey-hooded Gull			<5%
102	Pyrénées National Park	🇫🇷 France	1 of 10	<5%
	Black-headed Gull			<5%
103	Iberá National Park	🇦🇷 Argentina	1 of 10	<5%
	Grey-hooded Gull			<5%
104	Shenandoah National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%
105	Rocky Mountain National Park	🇺🇸 United States	1 of 10	<5%
	Bonaparte's Gull			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Kuwait City	🇰🇼 Kuwait	2 of 10	~80%
	Slender-billed Gull			~60%
	Black-headed Gull			~50%
2	Liverpool	🇬🇧 United Kingdom	1 of 10	~80%
	Black-headed Gull			~80%
3	Manama	🇧🇭 Bahrain	2 of 10	~80%
	Slender-billed Gull			~60%
	Black-headed Gull			~40%
4	Copenhagen	🇩🇰 Denmark	1 of 10	~70%
	Black-headed Gull			~70%
5	Manchester	🇬🇧 United Kingdom	1 of 10	~70%
	Black-headed Gull			~70%
6	London	🇬🇧 United Kingdom	1 of 10	~60%
	Black-headed Gull			~60%
7	Leeds	🇬🇧 United Kingdom	1 of 10	~60%
	Black-headed Gull			~60%
8	Amsterdam	🇳🇱 Netherlands	1 of 10	~60%
	Black-headed Gull			~60%
9	Auckland	🇳🇿 New Zealand	2 of 10	~60%
	Silver Gull			~60%
	Black-billed Gull			~20%
10	Kyiv	🇺🇦 Ukraine	1 of 10	~60%
	Black-headed Gull			~60%
11	Warsaw	🇵🇱 Poland	1 of 10	~60%
	Black-headed Gull			~60%
12	Karachi	🇵🇰 Pakistan	3 of 10	~60%
	Slender-billed Gull			~40%
	Black-headed Gull			~20%
	Brown-headed Gull			~10%
13	Birmingham	🇬🇧 United Kingdom	1 of 10	~60%
	Black-headed Gull			~60%
14	Belgrade	🇷🇸 Serbia	1 of 10	~60%
	Black-headed Gull			~60%
15	Cape Town	🇿🇦 South Africa	2 of 10	~60%
	Hartlaub's Gull			~50%
	Grey-hooded Gull			~10%
16	Dublin	🇮🇪 Ireland	2 of 10	~50%
	Black-headed Gull			~50%
	Bonaparte's Gull			<5%
17	Nizhny Novgorod	🇷🇺 Russia	1 of 10	~50%
	Black-headed Gull			~50%
18	Bucharest	🇷🇴 Romania	1 of 10	~50%
	Black-headed Gull			~50%
19	Melbourne	🇦🇺 Australia	1 of 10	~50%
	Silver Gull			~50%
20	Turin	🇮🇹 Italy	1 of 10	~50%
	Black-headed Gull			~50%
21	Rotterdam [The Hague]	🇳🇱 Netherlands	1 of 10	~50%
	Black-headed Gull			~50%
22	Saint Petersburg	🇷🇺 Russia	1 of 10	~50%
	Black-headed Gull			~50%
23	Sydney	🇦🇺 Australia	1 of 10	~50%
	Silver Gull			~50%
24	Maputo	🇲🇿 Mozambique	2 of 10	~50%
	Grey-hooded Gull			~40%
	Hartlaub's Gull			~10%
25	Paris	🇫🇷 France	1 of 10	~50%
	Black-headed Gull			~50%
26	Izmir	🇹🇷 Turkey	2 of 10	~50%
	Black-headed Gull			~40%
	Slender-billed Gull			~10%
27	Moscow	🇷🇺 Russia	1 of 10	~50%
	Black-headed Gull			~50%
28	Helsinki	🇫🇮 Finland	1 of 10	~40%
	Black-headed Gull			~40%
29	Budapest	🇭🇺 Hungary	1 of 10	~40%
	Black-headed Gull			~40%
30	Minsk	🇧🇾 Belarus	1 of 10	~40%
	Black-headed Gull			~40%
31	Hobart	🇦🇺 Australia	1 of 10	~40%
	Silver Gull			~40%
32	Novosibirsk	🇷🇺 Russia	1 of 10	~40%
	Black-headed Gull			~40%
33	Sincan	🇹🇷 Turkey	1 of 10	~40%
	Black-headed Gull			~40%
34	Abu Dhabi	🇦🇪 United Arab Emirates	2 of 10	~40%
	Black-headed Gull			~30%
	Slender-billed Gull			~10%
35	Kunming	🇨🇳 China	2 of 10	~40%
	Black-headed Gull			~40%
	Brown-headed Gull			<5%
36	Stockholm	🇸🇪 Sweden	1 of 10	~40%
	Black-headed Gull			~40%
37	Yekaterinburg	🇷🇺 Russia	1 of 10	~30%
	Black-headed Gull			~30%
38	Montevideo	🇺🇾 Uruguay	2 of 10	~30%
	Brown-hooded Gull			~30%
	Grey-hooded Gull			<5%
39	Anchorage	🇺🇸 United States	2 of 10	~30%
	Bonaparte's Gull			~30%
	Black-headed Gull			<5%
40	Dammam	🇸🇦 Saudi Arabia	2 of 10	~30%
	Slender-billed Gull			~20%
	Black-headed Gull			~10%
41	Istanbul	🇹🇷 Turkey	2 of 10	~30%
	Black-headed Gull			~30%
	Slender-billed Gull			<5%
42	Prague	🇨🇿 Czechia	1 of 10	~30%
	Black-headed Gull			~30%
43	Dubai	🇦🇪 United Arab Emirates	2 of 10	~30%
	Black-headed Gull			~30%
	Slender-billed Gull			~10%
44	Vienna	🇦🇹 Austria	1 of 10	~30%
	Black-headed Gull			~30%
45	Dakar	🇸🇳 Senegal	3 of 10	~30%
	Slender-billed Gull			~20%
	Black-headed Gull			~10%
	Grey-hooded Gull			~10%
46	Algiers	🇩🇿 Algeria	1 of 10	~30%
	Black-headed Gull			~30%
47	Lima	🇵🇪 Peru	2 of 10	~30%
	Grey-hooded Gull			~20%
	Andean Gull			~10%
48	Milan	🇮🇹 Italy	1 of 10	~30%
	Black-headed Gull			~30%
49	Tunis	🇹🇳 Tunisia	2 of 10	~30%
	Black-headed Gull			~20%
	Slender-billed Gull			~10%
50	Perth	🇦🇺 Australia	1 of 10	~30%
	Silver Gull			~30%
51	Hamburg	🇩🇪 Germany	1 of 10	~30%
	Black-headed Gull			~30%
52	La Paz	🇧🇴 Bolivia	1 of 10	~30%
	Andean Gull			~30%
53	São Luís	🇧🇷 Brazil	1 of 10	~30%
	Grey-hooded Gull			~30%
54	Porto	🇵🇹 Portugal	1 of 10	~30%
	Black-headed Gull			~30%
55	Brussels	🇧🇪 Belgium	1 of 10	~30%
	Black-headed Gull			~30%
56	Quanzhou	🇨🇳 China	1 of 10	~30%
	Black-headed Gull			~30%
57	Busan	🇰🇷 South Korea	1 of 10	~30%
	Black-headed Gull			~30%
58	Antalya	🇹🇷 Turkey	1 of 10	~30%
	Black-headed Gull			~30%
59	Kazan	🇷🇺 Russia	1 of 10	~30%
	Black-headed Gull			~30%
60	Lyon	🇫🇷 France	1 of 10	~30%
	Black-headed Gull			~30%

Zoos & Centres Where Found

#	Zoo / Centre	Country
1	Tierpark Berlin	🇩🇪 Germany	In captivity
2	Zoo Pilsen	🇨🇿 Czechia	In captivity
3	Werribee Open Range Zoo	🇦🇺 Australia	In captivity
4	Kansas City Zoo	🇺🇸 United States	In captivity
5	Ramat Gan Safari	🇮🇱 Israel	In captivity
6	Temaikén	🇦🇷 Argentina	In captivity
7	Bioparque Municipal Vesty Pakos	🇧🇴 Bolivia	In captivity
8	London Zoo	🇬🇧 United Kingdom	In captivity
9	Bird Paradise	🇸🇬 Singapore	In captivity
10	Faunia	🇪🇸 Spain	In captivity
11	Rainforest Wild Asia	🇸🇬 Singapore	In captivity
12	Pyrénées Animal Park	🇫🇷 France	In captivity
13	Odesa Zoo	🇺🇦 Ukraine	In captivity
14	Ralph Perkins II Wildlife Center and Woods Garden	🇺🇸 United States	In captivity
15	Cairns Aquarium	🇦🇺 Australia	In captivity
16	Sobela Ocean Aquarium	🇺🇸 United States	In captivity
17	African Safari World	🇦🇺 Australia	In captivity
18	Lake Biwa Museum	🇯🇵 Japan	In captivity

Show all 18 Show fewer

Challenges

Part of the challengeCity ClassicsWorldwidePigeonHouse sparrowBrown ratStarlingCrowGull

Masked Gulls and allies

Species in this group

Silver Gull

Hartlaub's Gull

Black-headed Gull

Grey-hooded Gull

Andean Gull

Bonaparte's Gull

Black-billed Gull

Brown-hooded Gull

Slender-billed Gull

Brown-headed Gull

Daily sighting probability by month

When they're spotted

Where to see Masked Gulls and allies

Parks Ranked

Cities Ranked

Zoos & Centres Where Found

Challenges