IUCN CRITERIA – populations matter the most!

IUCN CRITERIA FOR ENDANGERED SPECIES CRITERIA IS AS FOLLOWS IUCN CRITERIA FOR SPECIES (IUCN 2012) EXTINCT (EX): A taxon is Extinct when there is no reasonable doubt that the last individual has died. A taxon is presumed Extinct when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic […]


Tree hyraxes, and other nocturnal animals of Taita Hills Video telling about Hanna Rosti’s research and conservation of noctural animals in Taita Hills, filmed in January 2021 Volunteer opportunities with Kenya wildlife conservation – Mwalua Wildlife Trust Mwalua Wildlife Trust was founded by Patrick Kilonzo to provide drinking water for animals suffering from lack of […]

How to observe nocturnal animals in tropical forest?

Nocturnal animals are still fairly unknown and forest at night is magical It is constant surprise for me how little is known about nocturnal animals. Especially the ones living in the forests of Africa and other tropical forests. It is because they are difficult to find, and previously forests might have been too dangerous to […]

Critically endangered: Rüppell’s Vulture and White-Backed Vulture in Kenya

Critically Endangered (CR) vultures, Rüppells Vulture and White-Backed Vulture feeding on cow that has been killed by lions in Lumo conservancy Kenya in 2021. As they feed they make considerable noise, squealing. This article shows how to identify these species and discusses reasons behing re, even though it is not always easy as their coloring […]


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About Me

I am Hanna Rosti, PhD student from University of Helsinki. I study nocturnal primates of Taita Hills, with most focus on tree hyraxes and dwarf galagos. I also photograph animals and nature in Taita, Kenya.

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