Eciton hamatum
In 3 days ~20% in a week ~40%
Eciton hamatum is a species of army ant in the subfamily Dorylinae; it is found from Mexico to central Brazil and Bolivia. The species differs from Eciton burchellii, in that it does not fan out into the underbrush when foraging. Rather, it forages in columns, often in trees and preying exclusively on the larvae of other social insects. Its prey are often broods of vespid wasps and ants of genera Dolichoderus and Camponotus, suggesting that E. hamatum is mainly an arboreal forager.
They are known to make living bridges with their bodies over small gaps. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Carara National Park | 🇨🇷 Costa Rica | |
| 2 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 3 | Parque Natural Metropolitano | 🇵🇦 Panama | |
| 4 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report an Eciton hamatum sighting in Braulio Carrillo National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 232nd most-seen of the 378 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report an Eciton hamatum in Braulio Carrillo National Park on a given day, against under 5% in February, April–May and August–November, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Eciton hamatum sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Eciton hamatum sightings, Braulio Carrillo National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Carara National Park (Costa Rica, about 10%).
GBIF citizen-science records
It is estimated from how often the Eciton hamatum is recorded against all the insects logged in Braulio Carrillo National Park (8 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
