Accipiter poliogaster
Silhouette: Shyamal · PhyloPic
In 3 days <5%
The grey-bellied hawk or grey-bellied goshawk (Accipiter poliogaster) is a fairly large and rare species of forest-dwelling South American bird of prey in the family Accipitridae. Dutch naturalist Coenraad Jacob Temminck described the grey-bellied hawk in 1824.
This medium-sized hawk measures 38–51 cm in body length, with females being considerably larger (by about 40%) than males. Other body measurements in the male have been recorded as 232–270mm flat wing length, 165–187mm tail length, 18–21mm bill length from culmen to cere and tarsus length of 50–55mm;. Corresponding measurements in the female are 263–283mm flat wing length, 181–207mm tail length, 20–22mm bill length from culmen to cere and 53–60mm tarsus length.
The hawk's basic plumage is coloured black or dark grey above and contrasting white or grey on the throat and body underside below. As the common name suggests, the belly is pale grey. The head is black or very dark grey overall and extends halfway down the throat before suddenly becoming white, so as to give a "hooded" or "capped" appearance. In males, the crown is darker than the rest of the head, whereas the plumage on the back and head... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 2 | Tambopata National Reserve | 🇵🇪 Peru | |
| 3 | Manu National Park | 🇵🇪 Peru |
Rare
Under 5% of wildlife watchers report a Gray-bellied Hawk sighting in Parque Estadual Encontro das Águas on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 267th most-seen of the 308 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 Gray-bellied Hawk in Parque Estadual Encontro das Águas on a given day, so our monthly data shows no clear season. January to April have too few records to rate.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Gray-bellied Hawk sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Gray-bellied Hawk sightings, Parque Estadual Encontro das Águas has the highest daily chance: under 5%. Next come Tambopata National Reserve (Peru, under 5%) and Manu National Park (Peru, under 5%).
GBIF citizen-science records
It is estimated from how often the Gray-bellied Hawk is recorded against all the birds logged in Parque Estadual Encontro das Águas (10 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.
