Species to be potentially uplisted after a reassessment of species against criterion A, following Tracewski et al. (2016)

This topic is open for comments on all species presented in the attached pdf. These species are; Grey-rumped Treeswift (Hemiprocne longipennis), Silver-rumped Spinetail (Rhaphidura leucopygialis), Barred Eagle-owl (Bubo sumatranus), Chaco Owl (Strix chacoensis), Wallace’s Hawk-eagle (Nisaetus nanus), Rufous-bellied Eagle (Lophotriorchis kienerii), Western Piping Hornbill (Bycanistes fistulator), Keel-billed Toucan (Ramphastos sulfuratus), Red-breasted Toucan (Ramphastos dicolorus), Black-eared Barbet (Psilopogon duvaucelii), Olive-backed Woodpecker (Dinopium rafflesii), Yellow-lored Amazon (Amazona xantholora), Vasa Parrot (Coracopsis vasa), Long-tailed Parakeet (Psittacula longicauda), Rufous Treecreeper (Climacteris rufus) and Blue-breasted Fairy-wren (Malurus pulcherrimus).

Following the analyses of Tracewski et al. (2016), species assessments against criterion A have been carried out by extrapolating the rate of forest loss between 2000-2012 across a 3 generation period or 10 years (whichever is the longer), with the assumptions that population change is proportional to forest area change and that habitat loss has continued at the same rate to the present day. The generation lengths that have been used in this analysis are those held in the 2016 published Red List assessments, and so there may be some difference between the rates of decline presented here and those in Tracewski et al (2016).

In some cases the overall rate of change has been assessed as a different rate from that of forest loss, usually because there are additional threats such as hunting or invasive species that could be adding to overall declines in a species. Additionally, there may be some species which are inhabitants of forest edge/fragments and so forest loss may in fact be not having such a severe effect on them.

The rate of decline has then been compared to the threshold values for Vulnerable (30-49% decline), Endangered (50-79% decline) and Critically Endangered (≥80% decline) under criteria A2, A3 and A4. The Red List category Near Threatened does not have a threshold value, but to qualify for this category a species must approach the threshold for listing as Vulnerable. Therefore, species with a suspected rate of decline of >25% but <30% have been proposed to qualify as Near Threatened.

The pdf outlining species for potential uplisting under criterion A can be downloaded here: Deforestation Criterion A Uplists

Comments or further information regarding these proposed Red List statuses are very welcome.

Reference

Tracewski, Ł.; Butchart, S. H. M.; Di Marco, M.; Ficetola, G. F.; Rondinini, C.; Symes, A.; Wheatley, H.; Beresford, A. E.; Buchanan, G. M. 2016. Toward quantification of the impact of 21st-century deforestation on the extinction risk of terrestrial vertebrates. Conservation Biology 30: 1070-1079.

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4 Responses to Species to be potentially uplisted after a reassessment of species against criterion A, following Tracewski et al. (2016)

  1. Praveen J says:

    Rufous-bellied Eagle
    In southern Western Ghats, this species is widespread in the forests and one of the more abundant forest raptor. There are several areas in north-eastern Ghats and east-central India where it occurs. No declines have been noticed or reported though most forest birds would have declined since 1950. Loss of wet evergreen and moist deciduous forest cover in southern India in the last 20-30 years in southern India would be meagre (assumption – most such forests are in protected areas).
    http://ebird.org/ebird/india/map/rubeag2?neg=true&env.minX=26.546500000000037&env.minY=0.30970628675002043&env.maxX=139.04650000000004&env.maxY=42.19751758771518&zh=true&gp=false&ev=Z&mr=1-12&bmo=1&emo=12&yr=all&byr=1900&eyr=2018
    Compare this with other forest raptors like Legge’s Hawk Eagle or Jerdon’s Baza – this is much more widespread and common.

  2. Alejandro Bodrati says:

    Chaco Owl (Strix chacoensis)
    Considering the massive destruction of Chaco habitat I think the species should be considered at least Near Threatened and should be studied. It tolerates some transformation of forest, but there are a lot of places now where the Chaco forest has been completely cleared and it looks like the Pampa, in those places the species cannot possibly persist. Playback surveys could help determine abundance, occupancy, territory size, and tolerance for deforestation. In my experience, using playback, in the humid Chaco I only found it in the winter, so maybe it moves between dry Chaco and wet Chaco. If the species makes seasonal movements, these could be impeded by the large scale deforestation that has occurred in the transition zone between dry Chaco and wet Chaco.

  3. Alejandro Bodrati & Kristina Cockle says:

    Red-breasted Toucan (Ramphastos dicolorus)
    Not sure about the situation in Brazil. In Argentina (Misiones) nestlings are captured as pets, but we haven’t heard comments of people hunting it for food. (Whereas we hear that Ramphastos toco was heavily persecuted for food). Requires “high quality” tree cavities for nesting but can acquire these by eating whatever else was in the cavity (like Vinaceous Parrot eggs!). It’s probably the most common toucan in Misiones, common throughout Reserva de Biosfera Yaboty. Nests in forest, farms; feeds in forest, farms, towns. Doesn’t seem to be declining in Misiones. May even have increased as Ramphastos toco declined? Brazil is different: for many many kilometers there is no habitat at all, so we need to hear from Brazilian ornithologists about this species.

  4. Ricardo Torres says:

    Chaco Owl (Strix chacoensis)
    This species is naturally scarce along their broad distributional range. It is a forest-dwelling species and therefore it can not survive in areas without forests. It should be noted, however, that this species is not a strict Chacoan endemism, as it also inhabits in areas of the High Monte Ecoregion adjacent to the western boundary of the Dry Chaco, although always in forested sites. In any case, considering the current deforestation rates in the Gran Chaco region (between the higher worldwide), I believe that an uplist to Near Threatened category is justifyied.

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