Costa Rica holds an extraordinary share of the world's species for its size, and that statistic misleads visitors into thinking the wildlife is evenly spread. It is not. Each region has its own cast, and choosing the region is most of choosing what you will see.
Where each thing is
Sloths. Manuel Antonio at 33.4 nautical miles and the Caribbean lowlands. Both species are widespread but these are where you see them without trying.
Scarlet macaws. The Osa, around Drake Bay at 83.5 nautical miles, and the central Pacific. Reliable in both, and loud enough that you hear them first.
All four monkey species together. Effectively only the Osa.
Sea turtles. Tortuguero at 53.4 nautical miles on the Caribbean for green turtles, the northern Pacific beaches for leatherbacks and olive ridleys. Seasonal in every case, and the seasons differ by species and coast. Park fees and permits are not included in the flight.
Quetzals. The highlands — cloud forest and the Talamanca range. First half of the year is the usual advice.
Whales. The southern Pacific, with two migrations arriving from opposite hemispheres, which is why the season here is unusually long.
What decides what you see
Not the place. The guide.
This is the single most useful thing in this article. A good guide with a scope will show you more in two hours than a day of walking alone. They know which tree the sloth has been in for three days and which branch the owl uses.
The difference is not marginal, and it is the cheapest upgrade available on a wildlife trip.
The second thing: time of day
Dawn and late afternoon. Almost everything worth seeing is active then and hiding in between.
A wildlife trip planned around mid-morning starts is a wildlife trip that sees much less, and it is the most common self-inflicted disappointment.
The green season is better, not worse
We fly year-round. In the rainy season the pilot in command decides; if weather stops a flight, it is rescheduled at no cost. The wet months are when the forest is most active: breeding, fruiting, and full of sound. Fewer visitors, too.
The trade is that afternoons close in, which matters less for wildlife than for beaches, because you should be out at dawn anyway.
Where the reach matters
Several of the best places are the hardest to reach. Tortuguero has no road at all. The Osa has one, slowly. Palmar Sur at 27.6 nautical miles serves the southern region.
That difficulty is why they are still good, and it is the practical reason wildlife trips are the ones where an air leg changes the itinerary most — a day of road each way is a day not spent at dawn in the forest. We show a "from" price per route; the final fare depends on the date, the group and the baggage, and is confirmed in writing before booking.
Realistic expectations
You will see: sloths, monkeys, iguanas, hundreds of birds, and more insects than you expect.
You may see: macaws, toucans, caimans, turtles in season.
You probably will not see: a jaguar, a tapir, a puma. People do. Most people do not, and a guide who promises them is not a guide worth hiring.
Frequently asked
Is wildlife spread evenly across Costa Rica?
No. Each region has its own cast, so choosing the region is most of choosing what you will see.
Where do I see all four monkey species?
Effectively only the Osa Peninsula.
What matters most on a wildlife trip?
The guide. A good one with a scope shows you more in two hours than a day alone, and it is the cheapest upgrade available.
What time of day should I go out?
Dawn and late afternoon. Mid-morning starts are the most common self-inflicted disappointment.
Is the green season worse for wildlife?
Better. The forest is breeding, fruiting and loud, with fewer visitors. Afternoons close in, which matters less if you are out at dawn.
Will I see a jaguar?
Almost certainly not. A guide who promises one is not worth hiring.