1) I agree that it is premature to consider the possibility of sub-population structure. I have an unconfirmed sound record from 450 metres elevation (May 2019) and even if this is exceptional (which I think it probably is), then it tends to support the possibility of occasional exchange between mountains seemingly isolated by intervening lower ground.
2) Illegal snaring was found within the Terengganu sector of Taman Negara, at 932 m elevation, meaning that poachers are reaching the core elevation for this species. Norsyamimi, R., Noor Azleen, M.K., Zainal Abidin, M., Osman, E.R., Ismail, H.M., Ahmad Khusaini, M.K.S. & Rovie-Ryan, J.J. (2020). Partial cytochrome b sequence of Crested Argus from Peninsular Malaysia. Journal of Wildlife and Parks, 35: 129-138
Thanks Geoffrey: would the detection of snaring within the elevation be sufficient at this time to infer* (per IUCN guidelines) that the population is declining? My thought was not, but open to a different interpretation of the situation.
Many thanks to everyone who has contributed to this discussion. We greatly appreciate the time and effort invested by so many people in commenting. The window for consultation is now closed. We will analyse and interpret the new information and post a preliminary decision on this species’s Red List status on this page in early July.
Thank you once again,
BirdLife Red List Team
Based on available information, our preliminary proposal for the 2021 Red List would be to adopt the proposed classifications outlined in the initial forum discussion.
There is now a period for further comments until the final deadline in late July, after which the recommended categorisations will be put forward to IUCN.
The final 2021 Red List categories will be published on the BirdLife and IUCN websites in December 2021, following further checking of information relevant to the assessments by both BirdLife and IUCN.
Recommended categorisation to be put forward to IUCN
The final categorisation for this species has not changed. Malaysian Crested Argus is recommended to be listed as Near Threatened, approaching the threshold for listing as threatened under Criterion D1.
Many thanks for everyone who contributed to the 2021 GTB Forum process. The final 2021 Red List categories will be published on the BirdLife and IUCN websites in December 2021, following further checking of information relevant to the assessments by both BirdLife and IUCN.
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Contact the BirdLife Red List Team under redlistteam [at] birdlife [dot] org.