Hamadryas glauconome
In 3 days ~30% in a week ~60%
Hamadryas glauconome, the pale cracker or glaucous cracker, is a species of cracker butterfly in the family Nymphalidae. It was described by Henry Walter Bates in 1864 and is found in Mexico, Central America and south to Peru. It has been recorded as an unexpected vagrant in the United States in southern Florida, Arizona and Texas.
Adults have wings mottled in grey, brown and white. They are very similar in appearance to the grey cracker (Hamadryas februa) and like them have small, submarginal eyespots on the underside of the hindwings that incorporate some orange scales; these are the only two members of the genus to have orange eyespot scales. The pale cracker differs from the grey cracker in lacking a small red bar on the forewing.
The pale cracker is native to Mexico, Central America and South America as far south as Guatemala and Peru. It has been recorded as a vagrant in the United States, in southeastern Arizona (rare stray), south Texas (one sighting) and Florida. It is found in open areas with scattered trees, both moist areas and semi-arid ones.
Adults do not visit flowers, instead feeding on rotting fruit, carrion... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Calakmul Biosphere Reserve | 🇲🇽 Mexico | |
| 2 | Biotopo Cerro Cahuí | 🇬🇹 Guatemala | |
| 3 | Cañón del Sumidero National Park | 🇲🇽 Mexico |
With luck
About 10% of wildlife watchers report a Glaucous Cracker sighting in Calakmul Biosphere Reserve on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 16th most-seen of the 75 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Glaucous Cracker in Calakmul Biosphere Reserve on a given day, against under 5% in August and October–May, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Glaucous Cracker sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Glaucous Cracker sightings, Calakmul Biosphere Reserve has the highest daily chance: about 10%. Next come Biotopo Cerro Cahuí (Guatemala, about 10%) and Cañón del Sumidero National Park (Mexico, about 10%).
Same genus: Hamadryas
The closest relatives of the Glaucous Cracker that you can see in Calakmul Biosphere Reserve (genus Hamadryas, Cracker Butterflies) are Gray Cracker (about 10%) and Guatemalan Cracker (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Glaucous Cracker is recorded against all the insects logged in Calakmul Biosphere Reserve (14 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.
