George Sangster
 ·  30 oktober 2022  20:09, gewijzigd 30 oktober 2022  20:10

De foto is gemaakt door Philippe Verbelen.

Melo, M, Freitas, B, Verbelen, P, da Costa, SR, Pereira, H, Fuchs, J, Sangster, G, Correia, M, de Lima, RF & Crottini, A 2022. A new species of scops-owl (Aves, Strigiformes, Strigidae, Otus) from Príncipe Island (Gulf of Guinea, Africa) and novel insights into the systematic affinities within Otus. ZooKeys 1126: 1-54.

George Sangster
 ·  30 oktober 2022  20:25

Datum moet zijn: 4-7-2016

Jan Hein van Steenis
 ·  30 oktober 2022  22:36

Fraai artikel!

Ook interessant om te zien hoe Arabian Scops Owl weer een stapje verder verwijderd is geraakt van het taxon waarmee hij tot voor kort was gelumpt.

George Sangster
 ·  31 oktober 2022  10:24

Freitas, B, Melo, M, do Bom Jesus, C, da Costa, SR, dos Santos, Y, Crottini, A & de Lima, RF 2022. The recently discovered Principe Scops-owl is highly threatened: distribution, habitat associations, and population estimates. Bird Conserv. Int. in press.

Species baseline information is required for effective biodiversity conservation. Here we provide sound ecological data to support effective conservation of the Principe Scops-owl, Otus bikegila Melo, Freitas, Verbelen, Costa, Pereira, Fuchs, Sangster, Correia, de Lima & Crottini 2022, discovered in 2016. We mapped the observed and potential distribution, inferred habitat associations, estimated population size, and assessed the International Union for Conservation of Nature (IUCN) Red List category for this species. Surveys were carried out across Príncipe Island during the long and short dry seasons, recording owl presence in sampling points along transects. These data were used to model distribution, revealing that the Principe Scops-owl is restricted to 34.4 km2 in the south of the island, inside the Príncipe Obô Natural Park. Most records were in lower altitude native forest. Remoteness was the most important variable to explain presence at island level, followed by land use, which showed that the species is restricted to forest, clearly depending on native forest. Distance sampling using different models suggested a population density ranging between 33.4 individuals/km2 (95% CI: 23.6–47.2) and 46.4 individuals/km2 (95% CI: 29.3–73.6), which extrapolates to an estimated population size ranging from 1,149 individuals (95% CI: 813–1,623) to 1,597 individuals (95% CI: 1,007–2,533). We propose that the species is classified as “Critically Endangered” due to the small extent of occurrence, coupled with occurrence in a single location and inferred continuing declines in the extent of occurrence, area of occupancy, number of mature individuals and area, extent, and quality of habitat. Effective conservation of the Principe Scops-owl requires regular monitoring and further studies focusing on reproduction and potential nest predation by introduced mammals. Widespread support for the conservation of the Natural Park is vital to ensure the protection of this species and the endemic-rich native forests of Príncipe on which it depends.

Vincent Hart
 ·  1 november 2022  10:36

Ah mooi dat ie eindelijk beschreven is. Hele leuke soort op een geweldige plek!

George Sangster
 ·  1 november 2022  12:50

Artikeltje op de National Geographic site. NG heeft het onderzoek mede gesponsord.

George Sangster
 ·  3 november 2022  20:39

Nederlandse versie van het National Geographic artikel.

Artikel in de Jerusalem Post.

Maarten Wielstra
 ·  4 november 2022  03:43

Heerlijk artikeltje. Interessant hoe ze gebruik maken van lopende recorders en zelfs automatisch kunnen analyseren door te filteren op een bepaald geluid! Daar zit veel toekomst in!

George Sangster
 ·  24 oktober 2023  12:36, gewijzigd 24 oktober 2023  16:02

Deze foto kan nu als Principe Scops Owl - Otus bikegila worden hernoemd.

Zou iemand dat willen doen?

EDIT: dank!