||Christidis, L. and Boles, W.E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
||9-10 cm. Greenish pardalote with spotted wings. Sexes, adults and juveniles similar. Olive-green upperparts, finely scalloped darker, greyish-white below. Yellow wash around face and undertail-coverts. Black wings and tail with prominent white spots on tips of feathers. Similar spp. Juvenile Spotted Pardalote P. punctatus is more boldly patterned above, with greyish ear-coverts, buff-white spots on crown and orange-brown rump. Calls differ. Voice Inadequately known. Double-noted, territorial piping, second note marginally lower-pitched than first (P. punctatus has second note appreciably lower).
|Red List Category & Criteria:
||Taylor, J. & Butchart, S.
||Bryant, S. & Rounsevell, D.
||Allinson, T, Benstead, P., Garnett, S., McClellan, R., Pilgrim, J., Symes, A., Taylor, J.
This species is classified as Endangered because it has a very small range. Its distribution is severely fragmented and it is restricted to a very small area when breeding. Although the population of this species is presently stable, a significant proportion of its habitat continues to be destroyed and at least two locations have recently been lost.
|Previously published Red List assessments:|
- 2008 – Endangered (EN) –
- 2004 – Endangered (EN) –
- 2000 – Endangered (EN) –
- 1996 – Vulnerable (VU) –
- 1994 – Vulnerable (VU) –
- 1988 – Threatened (T) –
|Range Description:||Pardalotus quadragintus is endemic to Tasmania, Australia, and some larger offshore islands. It is present in all available habitat on Maria (974 individuals in 2009) and Bruny Islands (450 individuals in 2009), which contain over 90% of the population. Small remnant colonies remain on Flinders Island (c.70 birds between 1993-1997, however, following extensive bushfires in 2002, just 14 individuals were estimated in 2009), and on the mainland of Tasmania at Tinderbox Peninsula (46 individuals in 2009), Howden (10 individuals in 2009) and Coningham (6 individuals in 2009) (Bryant and Tzaros 2010). Colonies found previously at Lime Bay and Mt Nelson were not found in the most recent surveys and may have expired. The population was thought to be stable: In 1986, a census counted 3,520 individuals in 110 colonies in 38 km2. In 1994-1997, 3,840 individuals were counted in 121 colonies in 41 km2 (Garnett and Crowley 2000). However, in 2009 only 1,486 birds were found at 54 of the 102 colonies surveyed, representing a loss of 47% of colonies (Bryant and Tzaros 2010).|
|♦ Estimated area of occupancy (AOO) - km2:||41||♦ Continuing decline in area of occupancy (AOO):||Yes|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||330|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||5||♦ Continuing decline in number of locations:||Yes|
|♦ Extreme fluctuations in the number of locations:||No|
|♦ Upper elevation limit (metres):||1000|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||In 1994-1997, 3,840 individuals were counted (Garnett and Crowley 2000). However, the population has recently declined by >50% and in 2009 only 1,486 birds were counted (Bryant 2010). The number of mature individuals is therefore likely to be between 1,000-1,500.|
Trend Justification: In 1994-1997, 3,840 individuals were counted (Garnett and Crowley 2000). However, the population has recently declined by >50% and in 2009 only 1,486 birds were counted (Bryant 2010). The global population is thus estimated to have declined by 50-79% in three generations (12 years).
|Current Population Trend:||Decreasing|
|♦ Number of mature individuals:||1000-1500||♦ Continuing decline of mature individuals:||Yes|
|♦ Extreme fluctuations:||No||♦ Population severely fragmented:||Yes|
|♦ No. of subpopulations:||5||♦ Continuing decline in subpopulations:||Unknown|
|♦ Extreme fluctuations in subpopulations:||No||♦ All individuals in one subpopulation:||No|