What are the real chances of seeing wildlife?

We calculate sighting probabilities from millions of real observations

52,666 Species tracked
316 National parks
22.8M+ Verified sightings
156,491 Probability calculations

Where the data comes from

Every number on Wallace's Line comes from real observations made by real people — birdwatchers, biologists, park rangers, and nature lovers who record what they see in the wild.

All this data is aggregated by GBIF (Global Biodiversity Information Facility) — the world's largest open biodiversity data portal, with over 2.6 billion records from institutions and citizen scientists across 200 countries.

How we show it

For each species in each park, we estimate your chance of seeing it from real GBIF observations: how often it's recorded relative to its whole group (birds, mammals, reptiles…), calibrated against known sighting rates so it reflects what you'd actually experience. Probabilities are always shown rounded to the nearest 10% (e.g. "~40%") with a plain-language word, because citizen-science data supports honest approximations, not decimal precision:

DAILY SIGHTING PROBABILITY Share of wildlife watchers who report this species during a day in the park
<5%
Rare
5–20%
With luck
20–40%
Possible
40–70%
Likely
>70%
Very likely

When to look

Probabilities change throughout the year. We show you the best months for each species so you can plan your visit:

📅 Daily sighting probability by month White-nosed Coati · Corcovado National Park
~70%
Jan
~80%
Feb
~80%
Mar
~70%
Apr
~60%
May
~80%
Jun
~70%
Jul
~70%
Aug
~70%
Sep
~50%
Oct
~70%
Nov
~60%
Dec

This species peaks in June (~80%) — real, current data for Corcovado National Park.

We also show you the best hours of the day to spot each species — so you know whether to wake up early or head out at dusk:

☀️ When They're Spotted White-nosed Coati
☀️Diurnal
midnight6amnoon6pmmidnight

All together in a species card

Every species gets its own card with photo, conservation status, activity pattern, and probability — so you know exactly what to expect:

Conservation status
Activity pattern
Taxon group
Daily sighting probability

Wallace's Line Score

Each park gets a 0–5 star score based on two things: how rich its wildlife is (Biodiversity) and how likely you are to actually see it (Sighting). A third panel, Experience, rates the visit itself — climate, tourism, trails and entrance, with a bonus for World Heritage sites — without changing the stars. Below, the real, current score of Corcovado National Park — the same panel you'll find on every park page:

Click each category to see the full breakdown.

0.0 ★★★★★ ★★★★★ Excellent

Wallace's Line Score

How good is this park for seeing wildlife?
🦜

Biodiversity

Very good

How rich is the wildlife?

4.2 Global avg
4.3 ★★★★★ ★★★★★
Species by taxon
🦅 Birds
661
🐒 Mammals
208
🦎 Reptiles
122
🐸 Amphibians
77
1068 Total Species
828 Global average across 316 parks
37 Threatened 66 Endemic
🔭

Sighting

Excellent

How likely to see animals?

3.6 Global avg
4.3 ★★★★★ ★★★★★
🎯
Top-12 Avg Probability
65% Global avg
63%
📊
Coverage (409 species at ≥5% of 1068 in the inventory)
25% Global avg
38%
🔀
Taxon variety in top 12 (5 mammal, 5 bird, 2 reptile)
50% Global avg
83%
🔭
Species per 10 outings (distinct species a visitor would meet over 10 outings — effort held equal across parks)
128 Global avg
165
🌟
Iconic-group species (≥15%) (every species from the 19 iconic groups — monkeys, cats, toucans, macaws, sloths, crocodilians… — not just the 4 highlighted above)
16 Global avg
34
⭐
High-prob species (>40%)
30 Global avg
28
🏕️

Experience

Good

How easy and pleasant is the visit?

3.8 Global avg
3.3 ★★★★★ ★★★★★
🌤️ Climate Mixed
Medium
🎟️ Entrance Paid
Low
👥 Tourism High
Low
🥾 Trails Moderate
Medium
🌐 World Heritage No
—