Archived 2021 topic: Rockefeller’s Sunbird (Cinnyris rockefelleri): Revise global status?

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3 Responses to Archived 2021 topic: Rockefeller’s Sunbird (Cinnyris rockefelleri): Revise global status?

  1. Red List Team (BirdLife International) says:

    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

  2. Red List Team (BirdLife International) says:

    Preliminary proposal

    Based on available information, our preliminary proposal for the 2021 Red List would be to retain Rockefeller’s Sunbird as Vulnerable under Criterion C2a(i).

    Owing to its degree of habitat specialisation, taking the lower density quartiles of 4 other sunbird congeners, including two Cinnyris species that also inhabit forests and woodlands, Northern Double-collared Sunbird and Variable Sunbird, of 2-21 individuals/sqkm (BirdLife Population Density Spreadsheet; Vernon 1985; Shaw and Shrewry 2001), and assuming that it inhabits 10% of the forest within its range (8,490 sqkm [Global Forest Watch 2021]), the population may fall into the range of 1,698 – 17,829 individuals. This is roughly equivalent to 1,132 – 11,886 mature individuals, rounded here to 1,100 – 11,900 mature individuals. On further consideration of the evidence, this can be considered an estimate. Based on its current distribution map, it may have 2-3 subpopulations. It is therefore possible that the largest subpopulation holds <1,000 mature individuals.

    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.

    Shaw, P. and Shewry, M. (2001) Population density and habitat associations of restricted-range bird species at Ruhija, Bwindi Impenetrable Forest, Uganda. Bird Conservation International 11:161-174.

    Vernon, C. J. (1985) Bird populations in two woodlands near Lake Kyle, Zimbabwe. Honeyguide 31: 148-161.

  3. Red List Team (BirdLife International) says:

    Recommended categorisation to be put forward to IUCN

    The final categorisation for this species has not changed. Rockefeller’s Sunbird is recommended to be listed as Vulnerable under Criterion C2a(i).

    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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