||Prioniturus luconensis Steere, 1890
||Green Racquet-tail, Green-crowned Racket-tailed Parrot, Green-headed Racket-tailed Parrot, Green Racket-tail
||Lorito-momoto de Luzón
||del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
||30 cm. Green parrot with racquet-like tail extensions. Bright yellow-green head and breast. Rest of plumage green, darkest on wings and tail. Whitish-grey bill. Female is more uniform green, lacking yellow tones of male. Similar spp. Montane Racquet-tail P. montanus has blue on head. Possible confusion with Tanygnathus parrots, but is smaller, longer-tailed (with racquets) and has pale, not red, bill. Voice Raucous squawks interspersed with screeches and musical phrases.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Española, C., Hutchinson, R. & Jensen, A.
||Benstead, P., Bird, J., Derhé, M., Lowen, J., Symes, A., Taylor, J., Westrip, J., Martin, R
This species is listed as Endangered on the basis that its population is estimated to be very small, and thus less numerous than previously thought, and is inferred to be in on-going decline owing to trapping pressure, and the loss and degradation of suitable habitat.
|Previously published Red List assessments:|
- 2016 – Endangered (EN)
- 2014 – Endangered (EN)
- 2013 – Vulnerable (VU)
- 2012 – Vulnerable (VU)
- 2008 – Vulnerable (VU)
- 2004 – Vulnerable (VU)
- 2000 – Vulnerable (VU)
- 1996 – Endangered (EN)
- 1994 – Endangered (EN)
- 1988 – Threatened (T)
|Range Description:||Prioniturus luconensis is endemic to the Philippines, where it is known from Luzon and Marinduque. Formerly widespread and locally abundant, it has declined rapidly. Virtually all recent records have been confined to Subic Bay Forest Reserve on Luzon, where it is still locally common. However, at two sites with records since 1980, Quezon National Park and Angat Dam, it now appears to be extinct, having been common at the former in the 1980s. There are no recent records from Marinduque, where it may already be extinct. It is believed extirpated from Bataan Natural Park (where the area of old growth forest decreased by 65% between 1987/1993 and 2002), and apparently scarcer than in the early 1990s even at its remaining stronghold at Subic Bay Forest Reserve (A. Jensen in litt. 2013). It has been recorded at only seven out of 29 historic sites in the last 10 years; although possibly a function of poor coverage, it may more likely represent a genuine range contraction (Española et al. 2013). Following surveys in 2009-2010 (Española et al. 2013), the total population is estimated to include fewer than 2,500 mature individuals with no more than 250 mature individuals in each sub-population.|
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||147000|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||11-100||♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||300|
|♦ Upper elevation limit (metres):||1000|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Distance sampling along nearly 500 km of line transects at 14 sites across Luzon in 2009-2010, then multiplying site-specific density estimates by reserve area, resulted in estimates of 246 individuals (95% CI: 42-1,434) in Northern Sierra Madre Natural Park, and 174 (95% CI: 80-380) in Subic Bay Forest Reserve/Bataan Natural Park (Española et al. 2013). The data therefore suggest that there are fewer than 250 mature individuals in each of the two main remaining sub-populations and imply that the total population could include fewer than 2,500 mature individuals. The population is therefore placed in the band for 1,000-2,499 mature individuals, assumed here to equate to a total of c.1,500-3,800 individuals.|
Trend Justification: The threats of widespread logging and trapping for the cage-bird trade suggest that this species is undergoing a rapid population decline.
|Current Population Trend:||Decreasing|
|♦ Number of mature individuals:||1000-2499||♦ Continuing decline of mature individuals:||Yes|
|♦ Extreme fluctuations:||No||♦ Population severely fragmented:||No|
|♦ No. of subpopulations:||2-100||♦ Continuing decline in subpopulations:||Unknown|
|♦ Extreme fluctuations in subpopulations:||No||♦ All individuals in one subpopulation:||No|
|♦ No. of individuals in largest subpopulation:||1-89|