Onychoprion (Brown-backed Terns)

Genus

Brown-backed Terns

Onychoprion

3 species in our catalog · found in 32 parks

Species in this group

Each card shows the species at its best park — tap for the full profile

Sooty Tern
LC

Sooty Tern

☀️ Diurnal Bird

Onychoprion fuscatus

Insufficient data
Aleutian Tern
VU

Aleutian Tern

☀️ Diurnal Bird

Onychoprion aleuticus

0–10% · With luck
Bridled Tern
LC

Bridled Tern

☀️ Diurnal Bird

Onychoprion anaethetus

0–10% · With luck

📅 Monthly Probability

Probability-weighted average across the group's species

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

🕐 When They're Spotted

When the group's species are recorded (aggregated)

☀️🌙🌙12am6am12pm6pm12am

Where to see Brown-backed Terns

Worldwide records of this group (human observations from 2019 onwards, GBIF). Pins mark our parks — tap one for the chance of seeing at least one species of the group there.

Parks Ranked

Chance of seeing at least one species of the group · number of its species present

#ParkCountrySpeciesP(≥1)
1 Celestún Biosphere Reserve 🇲🇽 Mexico 1
10–20%
2 Coiba National Park 🇵🇦 Panama 2
0–10%
3 Wrangell-St. Elias National Park 🇺🇸 United States 1
0–10%
4 Arrecifes de Cozumel National Park 🇲🇽 Mexico 2
0–10%
5 iSimangaliso Wetland Park 🇿🇦 South Africa 1
<5%
6 Royal National Park 🇦🇺 Australia 1
<5%
7 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica 2
<5%
8 Manuel Antonio National Park 🇨🇷 Costa Rica 1
<5%
9 Isla del Coco National Park 🇨🇷 Costa Rica 1
<5%
10 Yala National Park 🇱🇰 Sri Lanka 1
<5%
11 Noosa National Park 🇦🇺 Australia 1
<5%
12 Kruger National Park 🇿🇦 South Africa 1
<5%
13 Galápagos Islands 🇪🇨 Ecuador 1
<5%
14 Katmai National Park 🇺🇸 United States 1
<5%
15 Daintree National Park 🇦🇺 Australia 2
<5%
16 Santa Rosa National Park 🇨🇷 Costa Rica 1
<5%
17 Las Baulas Marine National Park 🇨🇷 Costa Rica 1
<5%
18 Corcovado National Park 🇨🇷 Costa Rica 1
<5%
19 Kenai Fjords National Park 🇺🇸 United States 1
<5%
20 Machalilla National Park 🇪🇨 Ecuador 1
<5%
21 Bastimentos Island National Marine Park 🇵🇦 Panama 1
<5%
22 Kerinci Seblat National Park 🇮🇩 Indonesia 1
<5%
23 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico 1
<5%
24 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico 1
<5%
25 Ranomafana National Park 🇲🇬 Madagascar 1
<5%
26 Tsavo East National Park 🇰🇪 Kenya 1
<5%
27 Marino Ballena National Park 🇨🇷 Costa Rica 1
<5%
28 Everglades National Park 🇺🇸 United States 2
<5%
29 Ciénaga de Zapata 🇨🇺 Cuba 1
<5%
30 Big Cypress National Preserve 🇺🇸 United States 1
<5%
31 Darién National Park 🇵🇦 Panama 1
<5%
32 Braulio Carrillo National Park 🇨🇷 Costa Rica 1
<5%