Ancistrops strigilatus
Silhouette: Sheatherius · PhyloPic
In 3 days ~20% in a week ~40%
The chestnut-winged hookbill (Ancistrops strigilatus) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, Colombia, Ecuador, and Peru. The chestnut-winged hookbill is the only member of its genus. Beyond that its taxonomy is unsettled. The International Ornithological Committee and BirdLife International's Handbook of the Birds of the World treat it as monotypic.
Within the ovenbird family, the chestnut-winged hookbill is most closely related to the foliage-gleaners of genus Dendroma. This article follows the monotypic model. The chestnut-winged hookbill is 17 to 19 cm (6.7 to 7.5 in) long and weighs 30 to 39 g (1.1 to 1.4 oz). It is a largish furnariid with distinctive plumage, and a moderately hooked bill resembling those of Thamnophilus antshrikes. The sexes have the same plumage. Adults have a wide whitish to buff supercilium, grizzled brownish and buff lores, brown ear coverts with pale streaks, and yellowish buff malars. Their... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru | |
| 2 | Manu National Park | 🇵🇪 Peru | |
| 3 | Yasuní National Park | 🇪🇨 Ecuador |
With luck
About 10% of wildlife watchers report a Chestnut-winged Hookbill sighting in Tambopata National Reserve on a given day, based on 215 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 223rd most-seen of the 550 birds 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.
May–August, October and December–February
In those months about 10% of wildlife watchers report a Chestnut-winged Hookbill in Tambopata National Reserve on a given day, against under 5% in March–April, September and November, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Chestnut-winged Hookbill sightings with a recorded time, and about 8 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 Chestnut-winged Hookbill sightings, Tambopata National Reserve has the highest daily chance: about 10%. Next come Manu National Park (Peru, under 5%) and Yasuní National Park (Ecuador, under 5%).
Same family: Furnariidae
The closest relatives of the Chestnut-winged Hookbill that you can see in Tambopata National Reserve (family Furnariidae, Ovenbirds and Woodcreepers) are Buff-throated Woodcreeper (about 40%), Wedge-billed Woodcreeper (about 20%) and Elegant Woodcreeper (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-winged Hookbill is recorded against all the birds logged in Tambopata National Reserve (215 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.
