Amblyospiza albifrons
Silhouette: Sheatherius · PhyloPic
In 3 days ~60% in a week ~90%
The thick-billed weaver (Amblyospiza albifrons), or grosbeak weaver, is a distinctive and bold species of weaver bird that is native to the Afrotropics. It belongs to the monotypic genus Amblyospiza and subfamily Amblyospizinae.
They have particularly strong mandibles, which are employed to extricate the seeds in nutlets and drupes, and their songs are comparatively unmusical and harsh. Their colonial nests are readily distinguishable from those of other weavers, due to their form and placement, and the fine strands used in their construction.
They habitually fan and flick their tails. The generic name Amblyospiza was coined by Carl Jakob Sundevall in 1850 and means "blunt, finch", referencing the very large bill, while the specific name albifrons refers white forehead of the males. The thick-billed weaver was formally described as Pyrrhula albifrons in 1831 by the Irish zoologist and politician Nicholas Aylward Vigors from the collection of Henry Ellis, the specimens of which were attributed to Algoa Bay and environs in the Eastern Cape. Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mombasa | 🇰🇪 Kenya | |
| 2 | Pretoria | 🇿🇦 South Africa | |
| 3 | Kigali | 🇷🇼 Rwanda | |
| 4 | Johannesburg | 🇿🇦 South Africa | |
| 5 | Zanzibar City | 🇹🇿 Tanzania | |
| 6 | Yaoundé | 🇨🇲 Cameroon | |
| 7 | Durban | 🇿🇦 South Africa | |
| 8 | Harare | 🇿🇼 Zimbabwe | |
| 9 | Nairobi | 🇰🇪 Kenya | |
| 10 | Dar es-Salaam | 🇹🇿 Tanzania |
Possible
About 30% of wildlife watchers report a Grosbeak Weaver sighting in Zanzibar City on a given day, based on 68 verified sightings from GBIF citizen-science data. It is the 41st most-seen of the 86 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
May
In that month about 50% of wildlife watchers report a Grosbeak Weaver in Zanzibar City on a given day, against about 10% in August and September, the lowest months. That is one of Zanzibar City's wettest months, with about 190 mm of rain against 15 mm in July.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Grosbeak Weaver sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 11
Of the 11 cities where we can rate Grosbeak Weaver sightings, Zanzibar City ranks 5th at about 30%. The best odds are in Mombasa (Kenya, about 50%), Pretoria (South Africa, about 40%) and Kigali (Rwanda, about 30%).
GBIF citizen-science records
It is estimated from how often the Grosbeak Weaver is recorded against all the birds logged in Zanzibar City (68 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.
