Yellow-billed Tern
Yellow-billed TernYellow-billed TernYellow-billed TernYellow-billed Tern

Yellow-billed Tern

Sternula superciliaris

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
40–50% · Likely
overall probability at Parque Estadual Encontro das Águas
1,268 Verified records at Parque Estadual Encontro das Águas
July Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The yellow-billed tern (Sternula superciliaris) is a small seabird found in South America. It is a species of tern in the family Laridae. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay, and Venezuela. Its natural habitats are rivers, swamps, and freshwater lakes. Wikipedia →

40–50% of wildlife watchers report a Yellow-billed Tern sighting in Parque Estadual Encontro das Águas, based on 1,268 days of visitor records from GBIF citizen-science data.

Closest Relatives at Parque Estadual Encontro das Águas

Large-billed Tern
LC

Large-billed Tern

☀️ Diurnal Bird

Phaetusa simplex

40–50% · Likely
Black Skimmer
LC

Black Skimmer

☀️ Diurnal Bird

Rynchops niger

40–50% · Likely
Pied Lapwing

Pied Lapwing

☀️ Diurnal Bird

Hoploxypterus cayanus

40–50% · Likely
Wattled Jacana
LC

Wattled Jacana

☀️ Diurnal Bird

Jacana jacana

30–40% · Possible
Southern Lapwing
LC

Southern Lapwing

☀️ Diurnal Bird

Vanellus chilensis

20–30% · Possible
Spotted Sandpiper
LC

Spotted Sandpiper

☀️ Diurnal Bird

Actitis macularius

<5% · Rare
Solitary Sandpiper
LC

Solitary Sandpiper

☀️ Diurnal Bird

Tringa solitaria

<5% · Rare
Black-necked Stilt
Endemic

Black-necked Stilt

☀️ Diurnal Bird

Himantopus mexicanus

<5% · Rare
Lesser Yellowlegs
VU

Lesser Yellowlegs

☀️ Diurnal Bird

Tringa flavipes

<5% · Rare
Greater Yellowlegs
NT

Greater Yellowlegs

☀️ Diurnal Bird

Tringa melanoleuca

<5% · Rare
Pectoral Sandpiper
LC

Pectoral Sandpiper

☀️ Diurnal Bird

Calidris melanotos

<5% · Rare
Upland Sandpiper
LC

Upland Sandpiper

☀️ Diurnal Bird

Bartramia longicauda

<5% · Rare

📅 Monthly Probability

40–50
Jan
40–50
Feb
40–50
Mar
40–50
Apr
50–60
May
60–70
Jun
70–80
Jul
50–60
Aug
30–40
Sep
30–40
Oct
10–20
Nov
20–30
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 Parque Estadual Encontro das Águas 🇧🇷 Brazil
40–50%
2 Noel Kempff Mercado National Park 🇧🇴 Bolivia
30–40%
3 Amacayacu National Natural Park 🇨🇴 Colombia
10–20%
4 El Impenetrable National Park 🇦🇷 Argentina
10–20%
5 Anavilhanas National Park 🇧🇷 Brazil
10–20%
6 Tambopata National Reserve 🇵🇪 Peru
5–10%
7 Manu National Park 🇵🇪 Peru
5–10%
8 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
5–10%
9 Iberá National Park 🇦🇷 Argentina
<5%
10 Yasuní National Park 🇪🇨 Ecuador
<5%
11 Madidi National Park 🇧🇴 Bolivia
<5%
12 Sierra de la Macarena National Park 🇨🇴 Colombia
<5%
13 Cordillera Azul National Park 🇵🇪 Peru
<5%
14 Palo Verde National Park 🇨🇷 Costa Rica
Insufficient data
15 Emas National Park 🇧🇷 Brazil
Insufficient data
16 El Palmar National Park 🇦🇷 Argentina
Insufficient data
17 Tayrona National Natural Park 🇨🇴 Colombia
Insufficient data
18 Canaima National Park 🇻🇪 Venezuela
Insufficient data
19 Henri Pittier National Park 🇻🇪 Venezuela
Insufficient data

Quick answers

What are the chances of seeing a Yellow-billed Tern in Parque Estadual Encontro das Águas?

About 48% of wildlife watchers report a Yellow-billed Tern sighting in Parque Estadual Encontro das Águas, based on 1,268 days of visitor records from GBIF citizen-science data.

When is the best time to see Yellow-billed Tern in Parque Estadual Encontro das Águas?

July has the highest sighting rate for Yellow-billed Tern in Parque Estadual Encontro das Águas in our monthly data.

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