Ciconia stormi
Silhouette: L. Shyamal · PhyloPic
In 3 days ~70% in a week >90%
Storm's stork (Ciconia stormi) is a medium-sized stork species that occurs primarily in lowland tropical forests of Malaysia, Indonesia and southern Thailand. It is considered to be the rarest of all storks, and is estimated to number at most 1,750 wild individuals across its geographic range. The population has long been in decline and the primary cause is widely considered to be deforestation of its native habitat.
This stork was first described by Blasius in 1896, and named after the German sea captain Hugo Storm, a collector of zoological specimens in the East Indies. In Thailand, it is known as "nok kra su um", which refers to the birds' fishing procedure by stalking along the bank of a stream in dense forest.
This species is very similar and closely related to the woolly-necked stork whose range partially overlaps with that of Storm's stork. Although Storm's stork has long been considered a separate species, it has also been previously treated as a subspecies of the woolly-necked stork in the more recent past. However, Storm's stork is characterised by a yellowish-orange facial skin patch around the eye that is absent in the woolly-necked stork... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 2 | Tanjung Puting National Park | 🇮🇩 Indonesia | |
| 3 | Way Kambas National Park | 🇮🇩 Indonesia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Walsrode World Bird Park | 🇩🇪 Germany | |
| 2 | San Diego Zoo Safari Park | 🇺🇸 United States | |
| 3 | Bronx Zoo | 🇺🇸 United States | |
| 4 | National Zoo of Malaysia | 🇲🇾 Malaysia | |
| 5 | Fort Worth Zoo | 🇺🇸 United States |
Likely
About 40% of wildlife watchers report a Storm's Stork sighting in Tanjung Puting National Park on a given day, based on 58 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 14th most-seen of the 66 birds we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
July
In that month about 50% of wildlife watchers report a Storm's Stork in Tanjung Puting National Park on a given day, against about 20% in September and December, the lowest months. April has too few records to rate.
Between midnight and 3 am
Across all the parks we cover, that three-hour window holds the most Storm's Stork sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
2nd of 3
Of the 3 parks where we can rate Storm's Stork sightings, Tanjung Puting National Park ranks 2nd at about 40%. The best odds are in Kinabatangan Wildlife Sanctuary (Malaysia, about 60%).
GBIF citizen-science records
It is estimated from how often the Storm's Stork is recorded against all the birds logged in Tanjung Puting National Park (58 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.
