Cuculus hyperythrus
In 3 days <5%
The northern hawk-cuckoo or rufous hawk-cuckoo (Hierococcyx hyperythrus) is a species of cuckoo found in eastern China, North and South Korea, far eastern Russia, and Japan. Northern populations migrate to overwinter in Borneo. This elusive species is considered rare over most of its range and many of its life history traits remain understudied. It is known to perch in the crowns of tall trees, making direct observation difficult.
The northern hawk-cuckoo, along with the Malaysian hawk-cuckoo (Hierococcyx fugax) and the Hodgson’s hawk-cuckoo (Hierococcyx nisicolor), were all once considered the same species, H. fugax. All three were recently split into their own monotypic species.
The genus Hierococcyx are called hawk-cuckoos due to their broad, rounded wings and plumage which lend them great resemblance to Japanese and Chinese sparrowhawks. They are similar enough that in the field hawk-cuckoos are often mistaken for an Accipiter.
The northern hawk-cuckoo is one of the smallest in the genus Hierococcyx at 28-30 cm in length, a weight between 99.0-147.8 g, and an average wing length of 20.2 cm, although measurements can vary slightly between sexes.
Both sexes sport... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Northern Hawk-Cuckoo sighting in Hangzhou on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 204th most-seen of the 219 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Northern Hawk-Cuckoo in Hangzhou on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Northern Hawk-Cuckoo sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 cities where we can rate Northern Hawk-Cuckoo sightings, Hangzhou ranks 4th at under 5%. The best odds are in Shanghai (China, about 10%), Beijing (China, under 5%) and Nanjing (China, under 5%).
GBIF citizen-science records
It is estimated from how often the Northern Hawk-Cuckoo is recorded against all the birds logged in Hangzhou (10 verified sightings), 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.
